A ladder must extend 3 feet above a landing under the problem's access rule, but it extends only 1 foot. How many more feet are needed?
Correct Answer
B) 2 feet.
The needed added extension is 3 feet minus 1 foot, which equals 2 feet.
Why This Is the Correct Answer
The needed added extension is 3 feet minus 1 foot, which equals 2 feet.
Why the Other Options Are Wrong
Option A: 1 foot.
1 foot. is below the supported result for ladder safety; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 3 feet.
3 feet. is above the supported result for ladder safety; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 4 feet.
4 feet. is above the supported result for ladder safety; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Ladder Safety cart for Correcting Access: needed first, added second, whole the controlling choice last.
Reference Hint
Study anchor (closed-book): memorize Ladder safety from Cal/OSHA Title 8 Construction Safety Orders; CSLB Law and Business. / Title 8 ladder access requirements; know the rule or calculation trigger without relying on exam-room lookup.
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