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

A person who lacks competence and experience

Amateur

The one-word substitute for a person who lacks competence and experience is amateur.

• Proselyte means a person who has been converted to a new belief or religion.
• Expert means a person who has a very high level of skill or knowledge in a particular area.
• Immature means not fully developed or grown.
• Amateur means a person who engages in an activity for pleasure rather than as a profession.

Amateur is the most appropriate word for this group of words because it specifically refers to a person who lacks the skills and experience necessary to do something well. The other words do not have the same connotation of lack of skill or experience.