Identify the correct possessive structure: The customers trolley's, The customers' trolleys, The customer's trolleys, The customers trolleys.
Identify the correct possessive structure: The customers trolley's, The customers' trolleys, The customer's trolleys, The customers trolleys.
Explanation
"Customer's" (with apostrophe before s) shows possession by one customer.
"Trolleys" is the correct plural noun being possessed.