Select the option that can be used as a one-word substitute for the given group of words.

One who believes in his fate

Fatalist

The word that can be used as a one-word substitute for "one who believes in his fate" is fatalist.

• Fatalist means a person who believes that all events are predetermined and therefore inevitable.
• Fastidious means very particular or demanding about one's standards.
• Fugitive means a person who is fleeing from justice or danger.
• Fanatic means a person who is excessively or unreasonably devoted to a particular cause or belief.

Fatalist is the most appropriate word for the given group of words because it specifically refers to someone who believes that their future is predetermined and that they have no control over it. It is derived from the Latin word fatalis, meaning "pertaining to fate."