The next questions refer to the situation described below. In an experiment designed to determine whether watching violent scenes on television increases the frequency of aggressive behavior in children, one group of subjects saw a nonviolent cartoon and another group saw a violent cartoon. In the play period that followed the viewing of the cartoons, researchers observed the two groups of children together and counted instances of aggressive behavior. The control group in the experiment is the group that:

watched the nonviolent cartoon

Explanation:

The control group in an experiment is simply the group that is being separated from the rest of the experiment, such that the results can't be influenced by the independent variable that is tested.

In the scenario above, the control group in the experiment is the group that watched the nonviolent cartoon. This is because the experiment was about determining whether watching violent scenes on television increases the frequency of aggressive behavior in children so those that watched the nonviolent cartoon really didn't matter.

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.

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