Answer:
While travelling throughout the United States of America, Hans hiked the Appalachian Trail, surfed the Pacific Ocean, <em>drove</em> across the entire continent and sailed down the Mississippi.
Explanation:
Answer:
The first one is correct. The second one is a run-on sentence, like speaking without pausing at a comma to take a breath.
"He exercised while I watch television." because the tenses of the verbs don't match--"exercised" is past tense and "watch" is present.
I think it's D because it's the main thing
