Answer: I'm fairly certain that the answer is (B) At length, Una checked her tears, and, trying to put away her grief, arose, and, remounting her humble steed, set out again to seek her knight.
Explanation: I'm not 100% sure, by any means, but I think that she has resolve when she tries to put away her grief and remounted her steed.
The answer is D. Adjective Phrase.
