Aggregate Planning is a. the activity of developing a plan that combines the efforts of the firm and its suppliers. b. the activity of developing a plan that combines the efforts of the firm and its distributors. c. the activity of matching supply of output with demand over the medium time range. d. the activity of matching supply of output with demand over the short time range. e. All of the above.

C. the activity of matching supply of output with demand over the medium time range.

Explanation:

Aggregate Planning is the activity of matching supply of output with demand over the medium time range through the use of information gotten from the inventory levels.

This ultimately implies that, an aggregate planning is a strategic technique used by organizations to make an aggregate plan for its manufacturing (production) process typically ahead of time, in order to have an idea of the level of goods are to be produced and what resources are required so as to reduce the total cost of production to its barest minimum.

Hence, aggregate planning is an attempt to forecast consumer demands within the criteria set by product, production process and distribution methods i.e within the intermediate range of its capacity.