Read the sentence.

Question

In the early 20th century, the study of rocket propulsion was promising.

Which word or phrase is the subject complement in the sentence?

A.
study

B.
promising

C.
early

D.
rocket propulsion

Answer 1

The subject complement in the sentence is:

B. promising

The word "promising" describes the subject "the study of rocket propulsion." A subject complement typically follows a linking verb and provides additional information about the subject. In this case, "was" acts as a linking verb, and "promising" complements the subject "the study."