Q:

Read the following sentence and determine whether there is an error in it. The error, if any, will be in one part of the sentence. If the sentence is error-free, then select ‘No Error’ as your answer.

Psychiatrists feel that having a knowledge of (A)/ the physical and mental changes that occurs in one's body (B)/ and the reasons behind them (C)/ have become essential for all teenagers. (D)

• 1
  A
• 2
  B
• 3
  C
• 4
  D
• 5
  No error