Topic: Substitution, Expression, & Definition,

Best Answer Explained in Below-:

The correct answer is A) A green grocer. A green grocer is a retailer who specializes in selling fresh fruits and vegetables. This term is specifically associated with a business that stocks and sells a variety of produce, making it the most accurate option for someone who focuses on fruits and vegetables in a market setting.

In contrast, option B) A vegetarian simply describes a person who abstains from eating meat, which does not directly relate to selling produce. Option C) A hawker typically refers to a vendor who sells goods in public spaces, often from a cart or stall, and may sell a variety of items, not specifically fruits and vegetables. Lastly, option D) A vegetable man, while it implies a seller of vegetables, lacks the comprehensiveness of the term green grocer, which includes both fruits and vegetables.

Thus, "green grocer" not only specifies the type of goods sold but also reflects a recognized profession in the retail food industry, making it the most suitable answer.