The following sentences form a paragraph. Select the correct word for each blank. The Zamboni vacuums the dirty water and replaces it with clean, hot water, which comes out of a hot towel in the ____ rear.

A) Zambonis
B) Zamboni's

The apostrophe in "Zamboni's" indicates possession, so this is the correct choice to show that the hot towel belongs to the Zamboni. "Zambonis" is the plural form of Zamboni, but in this context we are only referring to one specific Zamboni.