I don't know what you the answers provided are if you can comment i'll be glad to help you :)
The answer is: It is an explanation for an observation.
Explanation:
A hypothesis is a suggested explanation that is both testable and falsifiable. You must be able to test your hypothesis, and it must be possible to prove your hypothesis true or false.
Cardiac muscles are involuntary muscles that can be found along the heart.
Skeletal muscle are voluntary muscles that help us walk lift and run.
Answer: A: It becomes inactive.
Explanation: Pepsin works best at a pH of 2. And as the stomach has a very acidic condition, pepsin works well. But in the small intestine, the pH is about 8, which is too high for pepsin to function. Therefore, pepsin gets denatured in the small intestine.
Mitosis-sex cell production
Meiosis- reproduction