Answer:
"often considered witty"
Explanation:
A subject complement is a word that describes the subject of a sentence that follows immediately after a linking verb. Like the name suggests, it complements the subject. It can either be a noun, adjective or pronoun.
Therefore, the subject complement from the sentence "Bret Hartes' poems and prose were often considered witty" is "often considered witty".
Animals being in captivity is bad for their instincts. In captivity, animals lose their more wild side that's in touch with their original and natural environment. Unless an animal (specifically whales in this case) is injured and cannot be in the wild, they should not be kept in captivity.
