Answer:
A) NO CHANGE
Explanation:
<em>smiling ironically</em> is a participial phrase. If a participial phrase comes at the end of a sentence, use a comma—unless the phrase is restrictive. The phrase <em>smiling ironically </em>is non-restrictive as it does not contain essential information, so you need to use a comma before it.
The term would be exercise that includes both cardio and strength training.
