Question

read each sentence and decide whether the underlined portion contains a mistake. if it does, identify the best way to correct or improve the sentence by choosing the appropriate alternative from the answer choices. if the underlined portion requires no correction or improvement, choose no improvement or correction is required. my mother got a new desk in her office, which once belonged to our town’s mayor.
which did at one time belong in possession to the mayor of the town.
which, to our town’s mayor, once belonged
which belonged, to our town’s mayor, once.
what was once in belonging to our town’s mayor.
no improvement or correction is required.

Explanation:

The original sentence "My mother got a new desk in her office, which once belonged to our town’s mayor." is grammatically correct and clearly conveys the meaning that the desk was previously owned by the town's mayor. The other options either introduce awkward phrasing ("belong in possession", "in belonging"), incorrect word order ("which, to our town’s mayor, once belonged", "which belonged, to our town’s mayor, once"), or incorrect relative pronoun usage ("what" instead of "which"). So no correction is needed.

Answer:

No improvement or correction is required.