What is the most logical next event?

How to create a meal plan for swimmers
Determine resting metabolic rate.
This is your daily calorie requirement without taking added activity into consideration. Up to 75 percent of calories burned in a day are burned due to normal activities, such as sitting and breathing.

Pick from:
(A). The other 25 percent are available for extra physical activities. In order to ensure you have enough extra calories, you need to determine a few things first..
(B). 15% of your calories come from sports. Order a lightweight water filter filter for swimmers..
(C). Give yourself an adequate space to exercise. The amount of space you'll need to exercise is based on what types of forms of exercise you are used to..
(D). Aim for somewhere between 70 and 80 percent of calories needed per day. You should aim for a range between 100 and 140 calories daily..
(A).