When moving rolling scaffolding, be sure _____.
a. workers on the scaffolding are wearing safety harnesses with lifelines connected
b. the caster brakes are locked in the correct direction before you move the scaffold
c. to apply force as near to the base as possible to avoid tipping over the scaffolding
d. to remove all planks to avoid the possibility of them falling off during the move
c. to apply force as near to the base as possible to avoid tipping over the scaffolding
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