Add a comma or semicolon if needed. Otherwise, submit the text without any additional punctuation.
Keenan focuses his workouts on building strength and lean muscle mass _ to do so, he
performs a variety of exercises using the barbells and weight machines at the gym.

Keenan focuses his workouts on building strength and lean muscle mass , to do so, he  performs a variety of exercises using the barbells and weight machines at the gym.

Explanation:

;

Explanation:

These are two separate sentences so separate with a semicolon.

Keenan focuses his workouts on building strength and lean muscle mass; to do so, he  performs a variety of exercises using the barbells and weight machines at the gym.

the correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,