which sentence most needs to be revised because its description is too vague? o we hiked two miles uphill in…

which sentence most needs to be revised because its description is too vague? o we hiked two miles uphill in the blooming forest today. o we sprinted back and forth in the stuffy high school gym. o we had to walk up several flights of stairs to get there. o we stretched and then slowly jogged once around the track.
Answer
Answer:
We had to walk up several flights of stairs to get there.
Brief Explanations:
The term "several" is vague. It doesn't clearly define how many flights of stairs were walked. Other sentences have more specific details like "two miles", "back and forth", "once around".