Select the option that can be used as a one-word substitute for the given group of words.
A person having significant experience in an occupation

Correct option is C

A person having significant experience in an occupation is called a veteran.
• (a) Agnostic: a person who believes that nothing is known or can be known of the existence or nature of God or of anything beyond material phenomena.
• (b) Fastidious: very attentive to and concerned about accuracy and detail.
• (c) Veteran: a person who has had long experience in a particular field, especially in the military or a specific occupation.
• (d) Novice: a person new to or inexperienced in a field or situation.