Question

What is the simple subject in this sentence?

Answer 1

The answer is letter D.

Rocket is the simple subject in the sentence above. Simple subjects are the most basic units in sentence constructions. A subject is a noun that talks about a person, place, thing, or idea. It tells us what the sentence going to be about and without it we cannot have a complete sentence that has sense. In the sentence above, the rocket is the subject of the sentence which is responsible for the effect of making space travel possible.