The answer is B because a virus would be more effective
Depends on how fast he runs in a sitting. If he runs slow during the 20 minutes he isn't getting much done :D.
Healthy adults aged 19-64 should do at least 150 minutes of moderate aerobic activity such as cycling or brisk walking every week as well as <span>strength exercises on two or more days a week that work all the major muscles. They could instead do </span><span><span>75 minutes of vigorous aerobic activity, such as running or a game of singles tennis every week, as well as </span>strength exercises on two or more days a week that work all the major muscles. They could even do a </span><span><span>mix of moderate and vigorous aerobic activity every week. </span></span>
Both (animal) and human activities contribute to land pollution.
____
Hope this helps you!
Admiring you need the help and then going to get help at a rehabilitation center
