The answer is B.
The planet cannot be too hot or too cold it has to be the right distance from its sun to maintain life.
Number 4 I think
the atomic mass is 11 because the mass is the sum of protons and neutrons
Unscrambling
1. resting heart rate
2. overload
3. workout
4. specificity
5. cool-down
6. progression
7. warm-up
8. the last one can only be instance, but there was a typo on the paper.
I found the answer for you if u need any help ask anytime!