The sentence that correctly uses modifiers is 'Complaining about the product's defect, the customer called the manager.' This choice clearly indicates who is performing the action without ambiguity. Both choices two and three work, but the second is the most straightforward regarding the use of modifiers.
;
The sentence that correctly uses modifiers is 'Complaining about the product's defect, the customer called the manager.' It clearly indicates who is performing the action. Proper placement of modifiers is crucial for clarity in writing. ;