which is true of mobile ladder locking mechanisms select the best answer: must be properly engaged before…

which is true of mobile ladder locking mechanisms select the best answer: must be properly engaged before use may be spring loaded may require manual activation all of the above none of the above previous question next question

which is true of mobile ladder locking mechanisms select the best answer: must be properly engaged before use may be spring loaded may require manual activation all of the above none of the above previous question next question

Answer

Brief Explanations:

Mobile ladder locking mechanisms must be properly engaged before use for safety. They can be spring - loaded and may also require manual activation.

Answer:

D. All of the above