Answer:
Knowledge of letters sets the stage for developing further literacy skills
knowledge of the letters is the first phonological awareness to be mastered
Explanation:
It is in the introduction and then restated in the conclusion. Each supporting detail is then referred to in each of the body paragraphs one by one. The question is worded very oddly in my opinion so I would say introduction because it fits that answer best, but it could technically be all of them.
A sentence not using like or as is what a metaphor is but i don't see a sentence anywhere so cannot be answered.
Hope this sort of helps.