Select the correct answer. Is this an INDEPENDENT CLAUSE or a DEPENDENT CLAUSE?
What I do.
O A. Independent clause
OB. Dependent clause
.

1. in which sentence is the underlined portion a predicate nominative? for astronauts, going into space to repair orbiting equipment becomes a challenge. for astronauts, going into space to repair orbiting equipment becomes tricky. for astronauts, going into space to repair orbiting equipment becomes challenging. for astronauts, going into space to repair orbiting equipment becomes frequent.