The answer to this question is Chief Executive.
Put simply, the difference between a unitary and a federal government is that a unitary government puts its power in one central government while in a federal system the governing power is divided into federal and local governing bodies that connect to the national government.
c. Cosmology is the answer
That came from an elite, privileged background.
In regards to the given question the correct option is option "d". The law that governs overtime earnings are controlled by two laws and they are Federal Wage and Hour Law and Fair Labor Standards Act. according to the Federal Wage and Hour Law the overtime rate should never be less than one and half times the regular pay rate of the labor after 40 hours of work. The Fir Labor Standards Act deals with the minimum wage, overtime rate, youth employment, record keeping and looking after the employees working in the private sectors of Federal, State and Local governments.