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.
Knowing that the area was prone-to earthquakes, all the buildings were reinforced with additional concrete.

Options

A. A) On being prone to earthquakes,
B. B) Having been knowing that the area was prone to earthquakes,
C. C) Since the area was known to be prone to earthquakes.
D. D) No Improvement

Answer

C

Explanation

To show cause, since is used.
Here, since the area was known to be prone to earthquakes is the right usage.