On what basis can the main difference between profession and business be understood?

Correct answer: Profession gives more emphasis on service and expert knowledge

The direct answer is A: a profession places greater emphasis on service and expert knowledge. A profession is based on specialised learning, competence, standards and responsibility towards clients or society. Its income is important, but service and proper use of expert knowledge are central ideas. Business is generally an economic activity involving production or exchange, and earning profit may be a major motive, although responsible businesses can also serve society. Option A is correct because it states the main conceptual difference without claiming that business has no service or that profession has no income. Option B is wrong: businesses can earn profit. Option C is wrong: professions normally emphasise ethics. Option D is wrong: businesses do have customers. The exam cue is to compare the dominant motive: professional knowledge and service in a profession, economic return in business.