Which of the following can be used to introduce an example or list only when it follows a complete sentence?

Use a colon to introduce an item or list, if the list comes after a complete sentence or independent clause. For example: There are three things every dog needs: food, water and healthcare. You need to grab these three things for the laundry: laundry detergent, fabric softener and dryer sheets.

Explanation:

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.