Directions : In these questions , a part of the sentence is given in bold . Below are given alternatives to the bold part at (A) , (B) and (C) which may improve the sentence . Choose the correct alternative . In case no improvement is needed you answer is (D ) .

Q:

He was so afraid that his knees knocked one another.

• 1
  one against
• 2
  each other
• 3
  both (A) and (B)
• 4
  No improvement.