Kevin, a basketball player for City High School, sinks thirty straight free throws during practice. However, during the critical game of the season, with the score tied and twenty seconds left to play, Kevin misses three consecutive free throws. Kevin's behavior can best be explained by theory.

Arousal theory

Explanation:

This theory explains that people or individuals always seeks to attain the optimal level of arousal and thus will perform actions that strives to maintain such height.

Arousal theory of motivation’s directly affects an individual performances and following Yerkes-Dodson Law, implies that higher levels of arousal will improve performance till it reaches the optimum height, after which performance start to drop with further extreme increase or decrease in arousal which will cause such individual to loose concentration in performing an action.

Here, Kevin, a basketball player  sinks thirty straight free throws during practice but during the critical game of the season, with the score tied and twenty seconds left to play, Kevin misses three consecutive free throws. Kevin's behavior can best be explained by  arousal theory because his arousal levels was too high causing him to loose concentration and  perform badly.

Arousal theory

Explanation:

Arousal theory suggests that people seek an optimal level of arousal that maximises their performance.

a is the answer because it just is

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.