Vygotsky suggested that new words provide a temporary from which children can step to higher levels of thinking

Vygotsky suggested that new words provide a temporary scaffold from which children can step to higher levels of thinking.

Explanation:

Based on Vygotsky's Zone of Proximal Development, scaffolding is a technique consisting of a supporter helping a learner to the extent the learner needs. In scaffolding, as the learner gains knowledge, the supporter withdraws his help gradually. According to Vygotsky, words and letters can be sounded out by the supporter as they help children read. When the child "clicks" and is able to read the rest of the word or the whole word on his own, the supporter will no longer help. His assistance functioned as a scaffold to allow the child to reach a higher level of thinking.

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; ha,ha,ha, corn on the cop;