Match the following groups of words with the correct one-word substitutions.

Phrase	One-word substitution
1. A person who deliberately sets fire to a building	a. Altruist
2. One who devotes one’s life to the welfare of other people	b. Bigot
3. One who does not believe in the existence of God	c. Arsonist
4. One who has narrow and prejudiced religious views	d. Atheist

Correct option is A

The correct one-word for the given group of words is (a) 1-c, 2-a, 3-d, 4-b.
Explanation:
1. Arsonist – A person who deliberately sets fire to property. (आग लगाने वाला)
2. Altruist – Someone devoted to the welfare of others. (परोपकारी व्यक्ति)
3. Atheist – A person who does not believe in God. (नास्तिक)
4. Bigot – A person with narrow-minded, prejudiced religious views. (कट्टरपंथी)
Example:
· He was arrested as an arsonist after the fire at the warehouse.
· She is an altruist who spends her time helping the needy.