Step 1: Know the term:
A field salesperson works outside the office. This person travels to the customer's shop, home or business place to sell.
Step 2: State the main feature:
The key feature of field selling is face to face contact with the customer at the customer's own place.
The salesperson shows the product, answers doubts and closes the sale there.
Step 3: Match with the options:
Option (D) says the salesperson interacts face to face with customers at their place. This matches the feature above, so it is correct.
Step 4: Why the other options are wrong:
(A) is wrong because a field salesperson spends the day outside the office, not inside it.
(B) is wrong because a salesperson must engage with customers to sell.
(C) is wrong because field selling is mainly personal contact, not only e-mail. That describes an inside or online salesperson.
Final Answer:
A field salesperson interacts face to face with customers at their place. The answer is option (D).