Answer :
This is true. The line "Fainting I follow, I leave off therefore" contains both a caesura and alliteration that are each offset by the other--contributing to the power of both.
The correct answer is TRUE. The given sentence is an example of both ALLITERATION and CAESURA.
CAESURA is a figure of speech that introduces a pause in a line of a verse, it is used for metrical purposes, and it can be marked with the symbol // or may be not marked. For example, "to be or not to be, // that is the question" (William Shakespeare, "Hamlet").
ALLITERATION is also a figure of speech that consists of the repetition of a sound at the beginning of words.
In the example provided we have the repetition of the sound (f) in "fainting" and "follow".