A timeline is important not just for academic goal, life goal, and high school goal, but for every goal. Thus, the answer is letter A. It is important to keep track of the things that have been done and those that still need to be be done in order to keep a straighter view towards the goal.
A time line would be filled prediction on what you expected to accomplished by a certain time in the future. Making a timeline for every goal is necessary in order to monitor your overall progress and ensure that you had make all necessary effort to accomplish your goals.
