Answer:
Choice 4.
Explanation:
After asking the question, the next step in the scientific method is to make your hypothesis.
The answer is the smoking of crack cocaine. This drug is more simply known as<span> '</span>crack'<span>, and is widely considered the most addictive form of cocaine. Crack is widely used as a recreational drug, and was first widely used in US cities during the mid 1980s. The term 'crack epidemic' describes the rapid increase in its use and the resulting socio-economic problems that resulted.</span>
Regulation of water balance in the joint is not a characteristic.
Synovial fluid is made of proteins and cells, rich in hyaluronic acid.
You can found it on articulations covering de extremes of the bone.
Its function is to lubricate the movement, protect the articular cartilage and shock absorption when we jump or have some kind of impact.
I think it’s C but I could be wrong