Answer: c. Sales force composite technique
Explanation:
Forecasting is a technique in order to find the demand and sales of your product or service in the market. The people closet to the market place are your sales force who are in the field interacting with customers and gaining in depth insights on the demand and liking and disliking of a company's product. Therefore, we use the sales force composite technique in order to find the forecasting based on the belief that organization members closest to the marketplace offers the best insights i.e. the sales force of your organization.