Answer and Step-by-step explanation:
To rewrite the underlined words in a possessive form, we need to indicate ownership. In this sentence, the underlined words "the boys" need to be rewritten in the possessive form.
"The towels belonging to the boys" can be rewritten as "The boys' towels are in the dryer."
By adding an apostrophe and an "s" ('s) after the word "boys," we indicate that the towels belong to the boys. The possessive form shows ownership or belonging. Therefore, the revised sentence states that the towels in the dryer belong to the boys.