Correct Option: B

professional (Noun) : a competent person ; a person who does an activity as a paid job rather than as a hobby
amateur (Adjective) : doing something for enjoyment/interest, not as a job ; novice
novice (Noun) : a person who is new and has little experience in a skill, job or situation
lover (Noun) : a person who loves or is loved
apprentice (Noun) : a young person who works for an employer for a fixed period of time in order to learn the particular skills needed in his job