I think the answer is b, because cartilage is what helps with flexibility in tissues....
Answer:
<em>The United States population consumes too large a portion of the world's resources due to relatively affluent lifestyles.</em>
Explanation:
The United States is known to be the most powerful country in the world and due to being such powerful, the lifestyle here is versatile and more affluent. As the country is rich, people tend to use resources beyond their needs. More resources are wasted in this country as the country has an adequate supply of almost everything. Hence, it is rightly argued that there is a serious consumption problem in the United States.
