How does the diagram titled ''Drone Obstacle Course'' help you better understand drone racing?

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.

yes, post it and i can try to you out.

line 5 is one of them idk the other one