Select the letter of the term that correctly identifies the function of

the word or phrase in parentheses in the following sentence:
Fossils are the (remains) of plants or animals that once lived.
a. direct object
b. indirect object
c. object complement
d. predicate nominative
e. predicate adjective

c. object complement

The term "remains" in the sentence "Fossils are the (remains) of plants or animals that once lived" is functioning as the object complement.