Answer: Option B
Explanation: In simple words, marketing plan refers to the written document that is prepared by an organisation for documenting the marketing activities that they are willing to perform in the near future.
A marketing plan helps an organisation to effective operate and control their activities related to marketing such as advertising and promotion. Generally a marketing plan is prepared for a minimum time period of a quarter and for the maximum time period of an year.
It can also be seen as an step by step plan specifically made for marketing purposes. Hence the correct option is B.