Division of labor means tasks are broken down into smaller segments workers are grouped in departments based on similar skills, expertise, or resource use tasks are divided into areas of specialization among a group of employees decision making is done by upper management

The advantage of administering personality tests on employees is that it will allow the employer to know the mindset and personality of the employee. this will allow the employer to at least have an idea as to how the employee works and how his attitude in the workplace. the disadvantage is that it may make the employee a little anxious as to whether he would meet the personality requirements of the employer and whether he would be able to retain the job or not. 

The answer would be b.

Planning,organizing,  leading, and  controlling.

C) not possible and which is rival in consumption.