In the following question, sentences are given with a part in bold. The given…

Concept

A pleonasm is the use of more words than needed to convey a meaning, where one word already carries the sense of another. The verb “return” inherently means “to come or go back,” so adding “back” repeats that idea and is redundant. The fix is to drop the redundant word while keeping the grammar intact.

Application

The bold phrase is “desire to return back home.” Here:

• “desire” is the singular noun governed by “an overwhelming,” so it must stay a singular noun.

• “to return” is the correct infinitive that follows the noun “desire.”

• “back” duplicates the meaning already in “return,” so it is removed.

Removing only the redundant word gives “desire to return,” which keeps the singular noun, the correct infinitive, and the natural idiom “return home.”

Contrast

• “desire of returning back” — uses the wrong preposition (“of”) and the gerund, and still keeps the redundant “back.”

• “desires to return” — changes the singular noun “desire” into a plural/verb form, breaking agreement with “an overwhelming.”

• “desire to returned back” — “to” must be followed by the base verb “return,” not the past form “returned,” and “back” is still redundant.

• “No replacement required” — incorrect, because the original does contain the redundancy “return back.”

Hence the correct replacement is “desire to return.”