Final answer:
The sentence contains a misplaced modifier that suggests the 4-year-old can drive. Correcting this would enhance clarity, suggesting instead that the caretaker must be able to drive.
Step-by-step explanation:
The sentence 'Located downtown, we are looking for someone to take care of our 4-year-old daughter who can drive.' is a bit unclear because it could imply that the 4-year-old daughter can drive. To make the sentence clearer and more grammatically correct, the misplaced modifier should be adjusted. A better version of the sentence would be 'We are looking for someone who can drive to take care of our 4-year-old daughter, and the location is downtown.'