C is the answer for this one
Answer:
you can use atom to experiment something and to test something
A. he can focus on progression, increasing the intensity and time he spends on the paddleboard.
c. he can start to lift weights and run a few days a week to add specificity to his training.
"physically fit" doesn't involve your mental/ emotional health, it normally involves using your arms, legs and brain, which in short your brain involves those of number 2