DIRECTIONS: in the following question, a part of sentence is bold. Below are given alternatives to the bold part which may improve the sentence. Choose the correct alternative. In case no improvement is required, choose “No Improvement” option.
The blue whale was thriving in all of the world's oceans until the turn of the century, at which time they became hunted to the point of extinction.

Options

A. A) The blue whale was thriving in all of the world's oceans up until the turn of the century
B. B) At the turn of the century, blue whales were thriving in all of the world's oceans.
C. C) Blue whales were thriving in all of the world's oceans until the turn of the century.
D. D) No Improvement

Answer

C

Explanation

Blue whales were thriving in all of the world.s oceans until the turn of the century is the right usage.