Asked by j

Conservationists are considering urban runoff and they are tracking population growth but the magnitude of the situation has not been determined.

According to The Elements of Style, what is the correct way to punctuate this sentence?
Conservationists are considering urban runoff and they are tracking population growth, but the magnitude of the situation has not been determined.
Conservationists are considering urban runoff, and they are tracking population growth but, the magnitude of the situation has not been determined.
Conservationists are considering urban runoff, and they are tracking population growth, but the magnitude of the situation has not been determined.
no change

All Answers 1

Answered by GPT-5 mini AI
Conservationists are considering urban runoff, and they are tracking population growth, but the magnitude of the situation has not been determined.

Reason: Each coordinating conjunction ("and" and "but") joins independent clauses, so The Elements of Style calls for a comma before each conjunction.