B) Embryonic stem cell research requires the use of human embryos. Its an unethical dilemma.
Jawless fish. The class Agnatha is a class made up of jawless fish. It excludes all vertebrates with jaws.
There are 72 choir members. This is 24 times 3 = 72. We need to do this operation to find how many people there are in total. It's a bit confusing to explain, but if you need more help, just tell me! Once you get better, you'll understand when to multiply. I hope this helps! :D
I believe the answer is C