Question

Which sentence is a run-on sentence?

A.
The weather may change suddenly higher up the mountain.
B.
The weather is nice today rainy, wet and cold tomorrow.
C.
Thomas thought about it and then opened the trunk to look.
D.
Thomas did not like the look of the dark, dusty trunk.

Answer 1

The answer Is C.

Step-by-step explanation:

it should be a comma between It and and.