Which of the following is a run-on sentence? a. while the rain was drenching at times, the fans were dedicated and refused to leave. b. the players continue to work on both hitting and fielding, allowing them to improve both skillsets. c. the game was tied at halftime; each coach gave his team a pep-talk. d. the game will be called if the storm continues, the weather is dangerous.

we need more information in order to answer.

the correct answer is option d. none of these. it is noted that options a, b, and c share the same content.

despite the valid answer provided at the last sentence of each of the options, a question/answer format shouldn't include humourous themed responses such as "you bet your thermal pj's we do." - unless of course, the answer is carried out in an informal environment. this could be replaced with a simple "yes" or "it is necessary".

the question should be re-phrased to a more appropiate syntaxis. instead of "do we need the greenhouse effect? ", it should be written as "is the greenhouse effect necessary? " in order to give it a general scope, instead of limiting the answer to the needs of "we" the humans.