What is weight training
a. a non competitive method of training that increases the rate at which muscles contract and relax
b. a non competitive method of training to improve muscular strength and endurance

B. a non-competitive method of training to improve muscular strength and endurance

Explanation:

B. A non competitive method of training to improve muscular strength and endurance

For plato edmentum users: D. A non competitive method of training to improve muscular strength and endurance

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.