Aunt Imogen was coming, and therefore The children-Jane, Sylvester, and Young George-
Were eyes and ears; for there was only one
Aunt Imogen to them in the whole world,
And she was in it only for four weeks (5)
In fifty-two. But those great bites of time

D. It suggests that the visit is just a brief sample of a pleasant life,

Explanation:

The above option is the correct answer.

From the excerpt, we are told that "...those great bites of time made all September a Queen's festival". This suggests that there is something pleasant in Aunt Imogen's visit since the sentence tells us that such September were a Queen's Festival. Using "bites of time" tells us that the visit is just a brief sample.

Bite has to do with little, small or brief. Option D is the correct answer.

c, his tragic flaw to cause his downfall