Jason instigates more and more fights with younger children on the school playground because it gains him the attention and respect of his friends. This most clearly suggests that his aggression is

learned response

Explanation:

answer; i believe that the correct answer is (decreased)

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.