Fear of old age :

Answer: Option D

Explanation:

Maieusiophobia means An abnormal fear of childbirth.

Metrophobia means Fear of motherhood.

Monophobia means Fear of loneliness.

Answer: Option B

Explanation:

Genophobia is the physical or psychological fear of sexual relations or sexual intercourse.

Gamophobia is fear of marriage.

Ergophobia means Fear of work.

Answer: Option A

Explanation:

Ophthalmophobia means Fear of being stared at.

Magalomania means Delusion about one's greatness.

Mysophobia means fear of dirt or contamination.

Answer: Option D

Explanation:

Toxicophobia means fear of poison.

Theophobia means fear of God.

Scelerophobia means fear of burglars(चोर).

Answer: Option B

Explanation:

Bathophobia means Fear of depths

Biblophobia means Fear of books

Catrophobia means Fear of doctors