Answer: Option A
Explanation: In simple words, baseline can be define as the level of some activity that can be considered as the average or normal performance level and be set as a criteria for future purposes. It is seen as an expected performance that will occur every time activity will be performed.
A baseline is a fixed reference point which is not changed occasionally. A base line works as a core factor in planning process as all the objectives will be set according to the baseline determined.
Hence the correct option is A.
