Laura's instruction and support of what her younger brother and sister can do in terms of the game are considered by rogoff and vygotsky to be

This question appears to be taken from a larger text, likely a story book of some kind. The names rogoff and vygotsky appear to be russian, or at the very least slovak in nature. There also might be some kind of analysis happening in the text from which the passage is taken.

The repetition of initial consonant sounds is called alliteration

Idont know which one is right   but i know that c is wrong and a might be wrong