Option B contains a comma splice.
A better way to rephrase that "sentence" could be:
The pots clanged to the kitchen floor, and the kitten cowered under the table.
The pots clanged to the kitchen floor. The kitten cowered under the table.
C. ;
The sentence that contains a comma splice is option B: 'The pots clanged to the kitchen floor, the kitten cowered under the table.' This sentence incorrectly joins two independent clauses with just a comma. The correct way to phrase it would be to use a conjunction or break it into two sentences.
;