Which action allows a user to insert a page break? check all that apply. shift + enter control + p control + enter insert, pages, page break view, pages, page break

The action that allows a user to insert a page break is Insert, Pages,  Page Break.
This will allow you to make a break in your pages, or to separate them more easily (or you can press Control + Return, it does the same thing). 
Shift + Enter is a line break, but it doesn't break pages. Page Break cannot be found in View section of Word, but rather only in Insert. Control + P prints your document. 

Ithink it is c)discuss the composition and structure

In my opinión this is the first person