Hi, S1atchley 32, perhaps the complete question you wanted to post was as follows:
Which fact about Yeats's background contributes most to the understanding of "When You Are Old"?
A. Yeats put writing aside for politics.
B. Yeats began his career as a poet at a young age.
C. His muse, Maud Gonne, refused his offer of marriage.
D. Yeats was inspired by an Irish folktale
In such event the answer is option C. It is the fact that contributes most to the understanding of "When you are old?".
Have a good one!
