When employees are hired at Hamilton University, they are required to complete a period of 90 days. During this period, both the employer and the employee have the opportunity to decide if the new hire is a good "fit."

Probation period of 90 days

Explanation:

While agreeing contract with an employee, employer adds a clause of probation period in which the number of days which are usualy less than 90 days are agreed. During this period the employee have to prove that he is best fit to the business and will also contribute to the business environment. Furthermore, the company has an advantage of dismissing the employee by adding clause of probation period in the contract if the company decides to not move with the candidate on the basis of his performance during the probation period.

a.   is the correct choice.

good luck. : )