10. The animal care worker should be familiar with the dosages and handling of medications because he or she O A. is likely to maintain the practice's inventory. O B. may have to administer drugs for all animals that had surgery. O C. will be able to explain their effects to pet owners. O D. can then evaluate their effectiveness.

answer: c.

explanation:

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

i believe your answer would be c.. : )