Question

Select the sentence that correctly uses commas in a non-restrictive phrase. A river, that is polluted, is unsafe for swimming. Polluted rivers, which can exist anywhere, are unsafe for swimming. When a river becomes polluted, it is no longer safe for swimming. However, rivers sometimes become polluted when nearby farms use too many poisons.

Answer 1

The correct answer would be B

Step-by-step explanation:

Because D is not correct I put D and got it wrong B is the second one that makes sense