Acommittee appointed by the governor and convened between legislative sessions to study a major policy issue would be considered a committee.

legislature's

Explanation:

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

the answer is d.index