The new drug proved to be highly effective, it has no side effects

Question

a) properly constructed sentence

b) comma splice

c) lacks parallel parts

d) dangler

Answer 1

b) comma splice.

The sentence joins two independent clauses with only a comma. To correct the error, a conjunction should be added after the comma or the two clauses should be separated into distinct sentences, like this:

The new drug proved to be highly effective, and it has no side effects.

or

The new drug proved to be highly effective. It has no side effects.