In each of the questions given below, four words have been highlighted. These four words may or may not have been placed in their correct positions. The sentence is then followed by options with the correct combination of words that should replace each other in order to make the sentence grammatically and contextually correct. Find the correct combination of the words that should replace each other.

The doctor carefully (A) examined the disease (B) to diagnose (C) the underlying patient (D).

Correct option is B

To make the sentence contextually correct, we need to interchange ‘disease’ and ‘patient’. After rearrangement, the meaningful sentence would be, “The doctor carefully examined the patient to diagnose the underlying disease.”