Read this excerpt from a concluding paragraph jason has drafted from his research outline on the hazards of playing football and answer the question. (10)currently, the best way to prevent concussions is to wear anti-concussion helmets. (11)if the nfl cares about its players and their safety, it will mandate that every player wear an anti-concussion helmet during every practice and for every game. (12) by showing its support of these protective helmets, the nfl will be encouraging the manufacturers to further improve them.
which sentences, if added after sentence 12, would provide the most effective conclusion to support the author’s argument?
1. (13)fans of the sport cannot continue to support a practice that leads to over 150 concussions every season. (14) consider a sound solution. (15)support the mandatory use of anti-concussion helmets.
2. (13)if the nfl approves the regulation, it will demonstrate its commitment to the future of its players. (14)it’s about time that we all pull together and offer athletes more than "atta-boys" for the risks they take to entertain us. (15)after all, haven’t we moved past the time of gladiators? (
3. 13)although nfl players receive generous salaries, injured players can no longer fulfill their contracts. (14)often the effects of concussions prove to be more serious at later points in a player’s life. 15)it’s time for fans to assist players by supporting the regulated use of improved safety helmets.
4. (13)will the availability of improved safety helmets guarantee that they will be used? (14) no, because many may think it fosters a less masculine image of physical strength. (15)by regulating their use, however, every player has a better option for his future.

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    a basketball team comprises of five players as mentioned above. the five players include point guard, shooting guard, small forward, power forward and center (ramen 56). the rules do not limit players to certain locations. however, evolution of basketball from the 1980s made players assume certain locations and roles. the point guard should be the fastest team member, and is responsible for organizing the attacks of the team. he does this by making sure that the right player has the ball at the right time (wissel 87). the shooting guard creates mainly long-range shorts and watches the opponent's last player on the defense. the small forward member of the team is majorly responsible for scoring points through dribble penetration and cuts to the basket. he also rebounds and plays actively. power forward plays invasively having their back to the basket and when on defense he plays under the basket or against the opponent's power forward (ramen 54). the center often uses his size and height to score and safeguard the basket when on defense. however, there is no rule that limits the players to these descriptions.  

              there are four quarters in regular basketball game, and each takes 10 or 12 minutes (ramen 67). in college basketball games, the game uses two-twenty minute halves. extra time should take 5 minutes in all games except in high school, where it takes four minutes. teams need to change sides after the first half of the game. a typical basketball game might take approximately 2 hours excluding the time when the game is inactive. at any given time, the court should have ten players, 5 from both sides. despite substitutions being unrestricted, it can only be performed when the game is stopped (wissel 51). additionally, teams must have a uniform comprising of a jersey and a pair of shorts. for identification purposes, the jersey should have a unique number in the team printed at the front and back. in some instances, the jerseys have the names of players, sponsors and team printed on them.  

              in conclusion, regulation basketball hoop comprises of a rim or basket attached to a backboard. violating the rules of the game results in a change of the shot clock if the committed by the defense or loss of ball possession. basketball teams comprise of five players, which includes the point guard, shooting guard, power forward, small forward and center. a typical basketball game might take approximately 2 hours excluding the time when the game is inactive.  

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the correct answer is c.

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