Select the option that can be used as a one-word substitute for the given group of words.
The doctor who deals with the female reproductive system.

Correct option is D

The correct one-word substitute for the given phrase is (d) Gynaecologist.
Gynaecologist: A doctor specializing in the female reproductive system and its disorders.
Gynaecologist in Hindi: स्त्री रोग विशेषज्ञ।
Example: She visited a gynaecologist for a routine check-up.
Meanings of other options:
· Ophthalmologist: A doctor specializing in eye care and vision problems.
· Hindi: नेत्र चिकित्सक।
· Orthodontist: A dentist specializing in correcting irregularities in teeth and jaws.
· Hindi: दंत-सज्जाकार।
· Cardiologist: A doctor specializing in heart diseases and conditions.
· Hindi: हृदय रोग विशेषज्ञ।