a, because exercise doesn't just aid the prevention of certain diseases, it helps prevent many diseases. i would've chosen d if it wasn't so specific but a is the correct answer.
It will be 50% 50%
you will get the letter from one parent and the letter )as in negative and positive) from the other parent.
Answer:
The Path Drugs Take Through the Body. Substances can enter the body through various means. Drugs can be smoked, snorted, injected, swallowed (pills, capsules, liquids), or applied through transdermal means (applied to the skin).1,2 Some substances can be eaten, such as marijuana.
Explanation: