Question

what should always be done when using hand signals?
○ maintain eye contact with the operator
○ ensure the backup alarm can be heard
○ stand on something at least 2 high
○ wear reflective gloves

Explanation:

When using hand signals (e.g., in a workplace or construction context), maintaining eye contact with the operator is crucial to ensure the operator sees and understands the signals. Backup alarms, standing height, and reflective gloves are not universal requirements for all hand - signal usage, but eye contact with the intended recipient (operator) is a fundamental practice.

Answer:

A. maintain eye contact with the operator