Final answer:
The government must prove a legitimate government interest in order to satisfy the rational basis test.
Step-by-step explanation:
In order to satisfy the rational basis test, the government must demonstrate a legitimate government interest that is rationally related to the discriminatory practice. The burden of proof lies on those challenging the law or action to demonstrate that there is no good reason for treating them differently from other citizens. The rational basis test is the standard used by the courts to decide most forms of discrimination.