In the following question, out of four alternatives, select the alternative which is the best substitute of the words / sentences: An abnormal fear of heights

Correct option is D

The correct term for an abnormal or irrational fear of heights is Acrophobia. This comes from the Greek word "akron" meaning height or summit, and "phobia" meaning fear. People with acrophobia may experience anxiety, dizziness, or panic attacks when at a significant height.
Explanation of options: (a) Algophobia – This refers to an irrational fear of pain. It is not connected with heights or elevation in any way, so it does not fit the definition provided in the question.
(b) Cacophobia – This is the fear of ugliness. It is a psychological condition where individuals fear or are repulsed by things they perceive as unattractive. It is unrelated to height or elevation.
(c) Cellophobia – This is not a standard or recognized phobia. It may be confused with "coulrophobia" (fear of clowns) or "claustrophobia" (fear of confined spaces), but it has no relation to heights.
(d) Acrophobia – This is the correct answer. It is the clinically recognized term for fear of heights. It is commonly referenced in both psychology and everyday language when describing such fear.