The answer is definitely B. When lying down your body is not enduring any activity.
Mario and I have to go back. It will take a moment. I'm a bit, I think it was not able. This was not able.
Answer:
Tomorrow
Explanation:
The one-word answer to this simple riddle is 'Tomorrow'. Tomorrow never comes, but people always push back their plans and say that they will "do it tomorrow". So tomorrow is always coming but it never actually arrives.
Good Samaritan laws would be the answer to your question
Long-time activities, such as a long running(or the Pacer Test), swimming, and biking.
Hope this helps! :)