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

Correct option is D

The correct one-word substitute for "a person who lacks competence and experience" is (d) amateur.
• Amateur: refers to a person who engages in a pursuit, especially a sport, on an unpaid basis, or someone who is inexperienced or not highly skilled in a particular area.
• Amateur: शौकिया (Hindi meaning).
• Example: Though he was just an amateur, his passion for photography was evident in his work.
Meanings of the given other options:
• (a) Proselyte: A person who has converted from one opinion, religion, or party to another.
• (b) Expert: A person who is very knowledgeable or skillful in a particular area.
• (c) Immature: Not fully developed or having little experience or emotional maturity.