Assuming this question is asking for a definition/synonym/"other word" for chivalrous, the answer is courteous. leaving a more comfortable seat for an elderly person is a respectful and polite gesture, which shows courtesy.
Answer:
Shel Silverstein
Explanation:
An antecedent can be regarded as thing that stand in place of a word that is been used previously. When a pronoun is used in reffering to a particular thing earlier in a sentence (
antecedent). There should be agreement in term of numbers i.e singular/plural with what it's reffering to.
Therefore, the antecedent of the pronoun " her" is Shel Silverstein
I think that it is the strength of hope.