Read the excerpt below and answer the question. The mother understood, And wisely stepped away. Aunt Imogen Was there for only one month in the year, While she, the mother,—she was always there; And that was what made all the difference. She knew it must be so, for Jane had once Expounded it to her so learnedly That she had looked away from the child's eyes And thought; and she had thought of many things.

This excerpt from "Aunt Imogen" is significant because .

1. it explains everything in explicit language
2. it leaves matters uncertain
3. it emphasizes Aunt Imogen's love for the children
4. it focuses on Aunt Imogen's inner thoughts