Select the option that is related to the third word in the same way as the second word is related to the first word. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word)
Orthopaedic : Bone :: Cardiologist : ?

Correct option is B

Orthopaedic : Bone

An orthopaedic specialist is a doctor who deals with bones and related issues.

Option A: Kidney

A nephrologist is a doctor who specializes in kidneys.

A cardiologist specializes in the heart, not the kidneys.

This option is incorrect.

Option B: Heart

A cardiologist is a specialist who treats the heart.

This is the correct analogy because it matches the same relationship as orthopaedic (bone) to cardiologist (heart).

This option is correct.

Option C: Lungs

A pulmonologist is a doctor who specializes in treating the lungs.

A cardiologist does not specialize in lungs.

This option is incorrect.

Option D: Brain

A neurologist or neurosurgeon is a doctor who treats disorders related to the brain.

This is unrelated to a cardiologist, who treats the heart.

This option is incorrect.

Conclusion:

The correct option is (B) Heart, as it maintains the same specialist-to-body-part relationship as Orthopaedic : Bone.