The first answer is correct: "They suggest that the heat is stifling, giving the poem an oppressive mood".
The author begins the poem with the sentence cited above. The use of the expression "rend open" plus the use of the imperative mode, suggest some sort of desperation caused by the heat. That is why the author prays for wind (an unbeatable natural force) to come and defeat heat, ending the suffering.
Is this from a book or something or do you mean what did she do that made her feel like nothing??
It is the answer C. He is supposed to meet people to help his nerves
Awnser:
A. the writing is clearly focused on the different types of plants