I need help on my English test

A

Explanation:

B is a whole other point, different games have different scoring, it makes no difference

C makes no real impact and against their point

D is severely irrelevant and also against their point

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.