Question

Swimming alone 

A. is never safe, regardless of ability.   B. is acceptable in a pool but never in a lake or an ocean.   C. increases the benefits of swimming for cardiorespiratory endurance.   D. is OK as long as you've been swimming for at least five years.

Answer 1

A. is never safe, regardless of ability.

Answer 2

Is never safe, regardless of ability. There are many variables that can occur while swimming anywhere. If swimming outside, a person has no control over environment shifts that could lead to hazardous occurrences in the water. There are also internal changes to the body that the person might not be able to control, such as sudden cramps or loss of hydration.