Select the word which means the same as the group of words given.
A doctor who specializes in heart diseases

Correct option is B

The correct one-word for the given group of words is Cardiologist.
A cardiologist is a doctor who specializes in diagnosing and treating heart-related diseases. (हृदय रोग विशेषज्ञ)
Example: The cardiologist advised the patient to undergo a stress test.
Meanings of other options:
· (a) Urologist – specialist in urinary tract and male reproductive organs (मूत्र रोग विशेषज्ञ)
· (c) Nephrologist – specialist in kidney diseases (गुर्दा रोग विशेषज्ञ)
· (d) Dermatologist – specialist in skin diseases (त्वचा रोग विशेषज्ञ)