One-year-old peyton notices that when his dad, archie, is watching football on television, he shouts at the screen. the next time a football game come on, peyton shouts at the screen. peyton’s behavior best exemplifies

imitation

Explanation:

Imitation -

It is the process by which an individual tries to copy or replicate some others behavior or act , is known as imitation .

Imitation is mostly seen by young and adults , where , they replicate the same act or behavior done by someone who  they really like or is an ideal to them .

Similarly , from the question , Peyton copies the act of his father , showcasing the process of imitation .

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."