Fully address each question and provide a sound, well-documented response from an employment lawyer or HR specialist perspective.

Why is each of the following good legal advice?

a. Employers must not make employment decisions based, in whole or in part, on the protected class characteristics of employees.

b. Employment requirements and practices should be scrutinized for their potential to disadvantage protected class groups and for evidence of their job relatedness and business necessity.

c. Employers need to exercise particular care in making employment decisions regarding employees that have filed charges or spoken out about discrimination.

d. Employers need to maintain good documentation and be prepared to explain why particular employment decisions were made.