In which sentence is the underlined portion a predicate nominative?

Question

A.
For astronauts, going into space to repair orbiting equipment becomes tricky.

B.
For astronauts, going into space to repair orbiting equipment becomes a challenge.

C.
For astronauts, going into space to repair orbiting equipment becomes frequent.

D.
For astronauts, going into space to repair orbiting equipment becomes challenging.

Answer 1

The correct answer is B. For astronauts, going into space to repair orbiting equipment becomes a challenge.

In this sentence, "a challenge" serves as a predicate nominative because it renames or identifies the subject ("going into space to repair orbiting equipment") after the linking verb "becomes."