The Supreme Court relied on the _____ Amendment when it overturned a Colorado law that would have made it difficult for gays to use the Colorado courts to fight discrimination.
E. None of the above, the Supreme Court has yet to rule on the issue of discrimination against homosexuals.
The best answer to this question is Option D. The Supreme Court relied on the 14th Amendment when it made its ruling in the case that I think your question is referring to. That case was called Romer v. Evans and it was decided in 1996.
In this case, the Court was deciding on the constitutionality of a Colorado constitutional amendment that would have prohibited the state from making homosexuals a protected class. In other words, it would have prevented any laws that protected homosexuals from discrimination. The Supreme Court ended up overturning this amendment. It said that the amendment violated the Equal Protection Clause of the 14th Amendment. Therefore, we can see that Option D is clearly the correct answer. (In addition, the other amendments mentioned have nothing to do with discrimination.)