GM insulin has some advantages over insulin taken from pigs or cattle: very large amounts of insulin can be made. it is less likely to cause an adverse reaction. it overcomes ethical concerns from vegetarians and others.
The greatest common factor for both would be 15.
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.