Correct Answer - Option 4 : Claustrophobia
The correct solution is option 4.
'Claustrophobia' means an extreme or irrational fear of confined places.
So, the most appropriate word for the given group of words is 'Claustrophobia'.
Let us look into the meaning of other words:
- 'Hydrophobia' means an extreme or irrational fear of water, especially as a symptom of rabies in humans.
- 'Aerophobia' means an abnormal and persistent fear of flying.
- 'Acrophobia' means an extreme or irrational fear of heights.