Answer: C. They show the speaker's feelings and behaviour at the start of her marriage, when she was young and less mature.
The poem "The River Merchant's Wife: A Letter" by Ezra Pound describes the transformation that a young girl undergoes when she finds a partner. At the beginning of the poem, the girl describes how she was timid, and how she kept her head down. However, as time goes by, she becomes more comfortable with her partner, eventually missing him terribly when he is away. The line describes the first stage of this relationship, when her shyness prevented her from being herself.
The second choice would be the answer
It tell you in the name fragments are bits and pieces of the whole, so sentence fragments are pieces of the full sentence.
