Take another look at the sentence:
A thin stray kitten cried outside the back door. Because Rebecca felt sorry for the poor animal, she __________ it some leftover ravioli, the only food she had in the refrigerator.
The sentence requires the past tense of feed, an irregular verb. Fed is the simple past form.
|Verb||Simple Present||Simple Past||Past Participle|
Fead, the form you chose, is a spelling error. Before you continue, review the rules for irregular verbs.