Question

multiple choice question
in addition to preselling, another method to prove your sales approach is working well is
o creating new products or services.
o selling a product or service in a limited area for a limited time
o conducting pilot tests of you products or services.

Explanation:

Preselling is a marketing - related activity. Creating new products or services is more about product development. Selling in a limited area for a limited time is a form of market testing but not the most direct way to prove the sales approach. Conducting pilot tests of products or services is a common business method (under the Marketing sub - field of Business) to assess if the sales approach is effective as it directly tests the market response to the sales approach.

Answer:

conducting pilot tests of you products or services.