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

Correct Answer: B (B-D)

Explanation:

To determine the correct positions, we must look at the logical relationship between a doctor, a patient, and a disease.

The Original Sentence:

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

Analysis of the Highlighted Words:

1. Position (A) - "carefully":
• Grammar: An adverb modifying the verb "examined."
• Logic: Doctors should examine things carefully. This is correct.
2. Position (B) vs. Position (D) - "disease" vs. "patient":
• Logic Gap: A doctor examines a human being (the patient) to find out what is wrong. You don't "examine a disease" to "diagnose a patient."
• Correction: If we swap (B) and (D), the sentence says the doctor examined the patient (D). This makes perfect sense.
3. Position (C) - "diagnose":
• Grammar: An infinitive verb following "to."
• Logic: The purpose of the examination is to identify (diagnose) the medical condition.
• Correction: After swapping (B) and (D), the doctor diagnoses the disease (B). This is the correct medical procedure.

Meaning of Words:

Corrected Sentence:

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