What? I dont understand the question in this ?
First conditional .
It’s used to describe things that we think are likely to happen in the future
I believe it's persuade. You want to persuade schools to offer better food. B is wrong because you are not entertaining anyone. Inform is wrong because you would just be stating facts. A is wrong because you are not telling someone to do something. Hope this helps! ;)
A refrain in poetry is when a word, phrase, line, or groups of lines repeat in the poem.
Conciseness, objectivy and accuracy.