Correct Answer: Pessimist

Solution : The correct choice is the f irst option, pessimist.

A pessimist is someone who habitually expects or sees the worst aspects of things, believes that the worst will happen, or generally has a negative outlook on life.

The meanings of the other options are as follows:

• An optimist is someone who habitually expects or sees the best aspects of things, believes that things will turn out well, or generally has a positive outlook on life.
• A preacher is someone who delivers religious sermons or speeches, often as a profession or as part of a religious role.
• A serial killer is a person who has murdered multiple individuals, usually following a specific pattern, motive, or modus operandi.