Which Sentence must be Revised to Eliminate the Preposition at the End

Which Sentence must be Revised to Eliminate the Preposition at the End?

A. If no one answers the door, then please let yourself in.

B. The top steps are fine, but be careful of the slippery stairs below.

C. Where are Katelyn and Ella walking to?

D. Do you know what Naveen was talking about?

Ans. C. Where are Katelyn and Ella walking to?

Ending a sentence with a preposition is not a rule but is done constantly in normal speech, but it is generally poor form in formal writing. The preposition "to" at the end of this sentence is not necessary because the meaning is clear. A more formal version of this question is, "To where is Katelyn and Ella walking?" or, more informally, "Where is Katelyn and Ella walking?" The other sentences are fine and don't require rewriting. In option D, "about" is part of the phrase "talking about," so it is fine to end the sentence in a preposition.

Prepositions and Phrasal Verbs

A preposition is a phrase or a word that precedes a noun, a pronoun, or a noun phrase. The preposition indicates direction, time, place, location, and relationship between objects. A phrasal verb is a phrasal phrase that is a verb combined with another element, often an adverb or a preposition. The preposition is necessary because it alters the meaning of the verb. For instance, "talking" and "talking about" are not the same.