Answer:
B.
standard test markets
Explanation:
Standard test markets is when a set of representative cities are selected and the full marketing mix is tested in these areas before a new product launch. The new products are sold through their normal channels to simulate reality.
Yummy peanuts is testing its new coconut flavored peanut butter in a group of representative cities. Aimed at forecasting national sales and profit. This is use of standard test markets.