Answer:
I think it should be required. Since it can help encourage a healthy life style, it can help prevent you from getting as sick (since physical activity can help increase your immune system, and help reduce the risk of certain diseases like heart diseases.
However with health class I think it should be elective. Since not everyone will need to know about health, like if you become an engineer health class will not help with that.
Explanation:
The right answer is A.
Antimetabolites are used as a drug that disrupts metabolism (chemical processes necessary for the functioning, growth and reproduction of normal and cancer cells). These molecules have a structure similar to those of metabolites, there will be a competition between metabolites and antimetabolites to bind to enzymes.
Antimetabolites are used as a cancer treatment to destroy cancer cells.
I believe the kidney is the most important. It does the most work!
