Which sentence uses commas correctly?

a: some rain has acid in it and this, can be dangerous .

b: this “acid rain” can kill trees, and , it also poison fish.

c: water itself is pure but , it may carry poison in it.

d: take a bellyflop in a pool , and you’ll find that the water feels pretty hard.

( i think it’s c )

Water itself is pure but , it may carry poison in it.

Explanation:

You should put a comma before but only when but is connecting two independent clauses.

vey information about pap? physical description beliefs actions interactions

plagiarism is the act of taking one else's work and passing it off as one's own.

consequences of plagiarism include failure on the plagiarized assignment, grade reduction on given assignment, course failure, in-school suspension, and a possible chance of dismissal.