Answer:A. reverse planning
Explanation: Reverse planning is an approach to planned that is specifically concerned with backwards integration. Reverse planning has also been described as the backward planning as it is concerned with the identification of the needs of the company such as it raw material source and the trying to meet the raw materials need by investing in the manufacturing of the raw materials. The activity of the Woollen company which caused it to buy a sheep farm is a REVERSE PLANNING APPROACH TO MANAGEMENT.