The awnser is none of the above
Direct contact with bacteria and viruses is when you get something like the flu or a something else that's why it's important to wash your hands. I hope my answer helped bye and have a good day.
The answer would be a. weight lifting.
Anaerobic exercises are not dependent on oxygen, thus the name. This is why it is used in non-edurance sports. It is high in intensity with little exertion. An example of this would be weight lifting. This is a type of exercise that body builders use to build muscle mass. Instead of oxygen, anaerobic exercises rely on energy stored in the muscles.
