Answer
System restore
Explanation
System restore is a recovery feature that helps restore your system to the previous condition or point. Most computers have system restore disks which are an advantage to the users especially when the computer clashes.These disks are very effective when it comes to restoring the system to its initial state.
Validation: Understanding and showing acceptance for another person
I believe the answer would be B taking b2 and b3 together and then subtracting b4 from the total number
Answer.
True
Explanation
According to Occupational Safety and Health Administration, aerial lifts should have load capacity ratings posted to indicate the amount of weight in a clearly marked sign. The signs posted will clearly show the elevated surface load capacity as an element of hazards management at worksites.