Hank is a professional writer. He submits regular columns at two blogs and self-publishes romance novels. Hank recently signed with an agent based in New York. To date, Hank has never made any money off his writing. The strength of the argument depends on which of the following? ['Being a professional writer does not require earning money.', 'Being a professional writer requires representation by an agent.', "Hank's self-published novels and blogs have received generally positive reviews.", "Hank's agent works at the biggest firm in New York."]