The answer would be B: It's possible that they <u>cannot produce a child with sickle-cell disease</u>, but blood tests on them both will be required to make sure.
If the sickle cell ran through the parents jeans then that'll be more of a problem, there can always be a possibility that it is in themselves, but since their parents didn't pass it down to them, their almost in the clear.
<u><em>Hope this helps!</em></u>
1. A - the other two options describe muscular endurance, not muscular strength.
2. B - you are correct.
3. B: False - you are correct again.
4. B: False - correct again.
5. B: False - correct yet again.
6. B (A and C mean the same thing) correct.
Looks like you got this. (:
You should stretch before you exercise