Flexibility is the ability of muscles and joints to move through their complete range of motion
The first option is correct.
Answer: I disagree because not everyone can do those things and they might be special needs and can not do it or they may have a job
Are you supposed to correct the grammar?
If so, here's the answer:
Last summer, I went to France, because my aunt works there.
The answer is A) I learned to sew by taking a class, it was taught by a great teacher. The reason is because a comma splice is used to join two independent clauses together. An independent clause is a simple sentence that can stand alone on its own. Because the first part and second part of the sentence can stand alone on their own as two separate sentences they are both independent clauses. Thus A is an example of a comma splice.
A: terribly: modifies old, an adjective
B: very smart: very modifies smart, an adjective
C; extremely modifies "slow", an adjective again
D: quickly modifies "hid" a verb - this is the correct answer!