Final answer:
3) 5. The length of the tow connection for vehicle towing should not exceed the specified limit for safety reasons. The exact length varies, with options ranging from 5 to 20 feet.
Step-by-step explanation:
When one vehicle is towing another, the connection between them should not exceed a certain length to ensure safety and control. The exact length may vary by jurisdiction, but the options provided suggest a range of lengths. The figures and examples provided in the question illustrate how tension in a tow chain or rope increases as the chain or rope is pulled tighter and becomes more straight. In a practical towing situation, the tow line should be kept as short as is safely possible to maintain control and reduce the possibility of an accident.