What is the maximum safe angle for leaning a ladder against a wall using the 1:4 rule?

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Multiple choice — select the best answer

A60 degrees
B90 degrees
C75 degrees
D45 degrees

✓ Correct answer: C. 75 degrees The 1:4 rule means the base of the ladder should be 1 unit out for every 4 units up, creating an angle of approximately 75 degrees from the horizontal for safe and stable use.

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