Option A. Please invite the guests in.
Option B. Jenni did not know what the movie was about.
Option C. I don’t know where Carlos is staying at.
Option D. Which town are you going to?
Answer:- option C.
Anwer for the question Which sentence must be revised to eliminate the preposition at the end? is “I don’t know where Carlos is staying at.”
Explanation:-
This sentence can be revised as “I don’t know where Carlos is staying.” by removing the preposition “at” at the end. It is generally considered better to avoid ending sentences with prepositions in formal writing, although it is not always incorrect grammatically. In this case, the sentence is more concise and clear without the unnecessary preposition.
Explanation for preposition
A preposition is a word in a sentence that demonstrates the link between a noun, pronoun, or phrase and another word. In the sentence “She put the book on the table,” for example, the word on is a preposition indicating the location of the book in relation to the table. Prepositions can also denote time, manner, reason, or goal. In the sentence “He went to the park with his friends,” for example, the word to indicates the direction of his movement and the word with indicates the style of his action.
Prepositions are typically used before the noun, pronoun, or phrase that they modify, which is referred to as the preposition’s object. For example, in the sentence “She gave a gift to him,” the word to is a preposition that modifies the object of the preposition, the pronoun him. Prepositions can sometimes be used at the conclusion of a sentence, notably in queries or informal discourse. In the query “What are you looking for?” for is a preposition that modifies the pronoun what, which is the preposition’s object.
There are many prepositions in English, and several of them have multiple meanings or applications. The following are some of the most common prepositions: about, above, across, after, against, along, among, around, as, at, before, behind, below, beneath, beside, between, beyond, by, down, during, except, for, from, in, inside, into, like, near, of, off, on, onto, out, outside, over, past, since, through, throughout, till, to, toward, under, underneath, until, up, upon, with, within, and without.