Answer:
D. They occur where two or more bones join.
<em>This is the correct option :)</em>
The principle of progression talks about the requirement to increment or increase gradually the difficulty of workload. This way of workout will increase the physical strength and body stamina. If a person wants to develop more power on his legs, the frequency, time, difficulty or intensity of workout should be lengthen or increased because this will progress the muscle.
I'm guessing this a question for a lab class. I have never has a lab class that allowed just prescription glasses, they usually make you wear goggles over them.
so my answer would be false
