It is Nathan's job to evaluate the performance of the marketing strategy his company used to promote its new line of tennis shoes and recommend any changes the company should make. Which step of the marketing plan is Nathan responsible for?

A) implementation phase
B) production phase
C) control phase
D) planning phase
E) objective phase

Nathan is responsible for the control phase of the marketing plan, which involves evaluating the performance of the marketing strategy and making any necessary changes. The planning phase involves setting goals and objectives for the marketing campaign, while the objective phase involves determining the target market and positioning the product in the market. The implementation phase involves executing the marketing tactics, and the production phase involves producing the actual product.