Question

read the first part of the passage about blue whales.
a blue whale is big. it is the biggest animal in the world.
when a blue whale is a new baby, it is as big as a car. when it is older, it is even bigger. it is as long as two school buses put together.
complete the sentence.
a baby blue whale is as big as ________.
a car an adult whale two buses

Explanation:

The passage clearly states "When a blue whale is a new baby, it is as big as a car." So we just need to refer to the text.

Answer:

a car