The human resources department of Orbit Bank believes in being unbiased toward all employees and treating them fairly. They believe it is crucial that the company treat all their employees equally. However, Susan Daniels, an employee at the bank, recently filed a lawsuit against the company, claiming that she was discriminated against. Which of the following, if true, best justifies Susan's action?
A) The company did not give her preferential treatment even though she was from the host country.
B) She was asked whether she was over eighteen during the first round in the interview process.
C) Her colleagues expressed their dissatisfaction over their pay and severance packages.
D) She had faced a similar situation of discrimination in her previous company.
E) She was not invited to regular Friday staff lunches with the guys.

Discrimination refers to unequal or unfair treatment owing to forming a prejudice against an individual. It could be on account of an individuals race, sex, nationality, caste, etc.

The federal law strictly prohibits any sort of job discrimination on the grounds of age, sex, religion, nationality, color, etc.

In the given case, of all the scenarios mentioned, the one which would be regarded as discriminatory would be, the employee not being invited to regular Friday staff lunches with the guys unlike other employees.

This conveys inequality towards the employee and amounts to a discriminatory practice, which would justify her filing a lawsuit against it.