Scenario 116: When coupling a small utility trailer to a straight truck, which connection should always be checked first after aligning and lowering the trailer onto the hitch ball?

Question: Scenario 116: When coupling a small utility trailer to a straight truck, which connection should always be checked first after aligning and lowering the trailer onto the hitch ball?

Answer options:

• The electrical connector for lights ✅ The safety chains
• The brake line connection
• The surge brake mechanism

Correct answer: The safety chains

Explanation: After the trailer is on the hitch, the safety chains are the first critical connection to make, ensuring that if the coupler fails, the trailer remains attached to the towing vehicle, as per safety regulations. The correct answer is "The safety chains". This capacity-fill scenario 116 reinforces the same competency for the class3 bank and follows the certified explanation standard.