Question 623 Deck General

70% to pass

How should you signal the crane operator to lower?

A Extend arm with thumb pointing downward, and flex fingers in and out.
B Extend arm and point finger in the direction to move the boom.
C With arm extended downwards and forefinger pointing down, move hand in small horizontal circles.
D With forearm vertical and forefinger pointing up, move hand in small horizontal circles.
AI Explanation

The correct answer is C) With arm extended downwards and forefinger pointing down, move hand in small horizontal circles. This hand signal is the standard way to indicate to the crane operator that they should lower the load. The extended arm and downward pointing finger clearly communicates the desired direction of movement, while the small horizontal circular motion provides the "lower" instruction. The other options are incorrect because they do not directly and unambiguously signal the crane operator to lower the load. Option A could be interpreted as a "stop" signal, while options B and D do not specify the downward direction.

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