Personal space is an intangible boundary. select the best answer from the choices provided.
a. true
b. false

This statement is TRUE.

The personal space is the physical area that surrounds the individual and which is psychologically regarded as safe and  as it belongs to him/her. Therefore it poses a boundary between this person and other individuals which are physically close. Intangible means that it cannot be touched (which is the case of this singular psychological boundary).

answer: fact: italy has over 300 islands ranging from extremely small uninhabited islands to the huge island of sicily.

explanation:

opinion: italy has way to many islands

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."