June is finding it difficult to recognize familiar objects, like tables and chairs, and people, like her close friends and family members. June is most likely experiencing

dissociation

Explanation:

dissociating usually leads to unfamiliarity with objects and people around u

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."

answer; the parasympathetic nervous system;