Which is not a suspect classification, according to the Supreme Court?

Race
Age
Gender
*National origin

Check this site and your text materials. I think your answer is wrong.

http://www.answers.com/topic/suspect-classification

This article makes it a bit clearer.

http://en.wikipedia.org/wiki/Suspect_classification

To determine which is not a suspect classification according to the Supreme Court, we need to understand what suspect classifications are. Suspect classifications are categories of people that are considered to be inherently suspect and are subject to strict scrutiny by the courts when laws or actions discriminate against them. Strict scrutiny is the highest level of judicial review applied to laws that implicate fundamental rights or target suspect classifications.

Race, gender, and national origin are all considered suspect classifications by the Supreme Court. Laws or actions that discriminate based on these factors are subject to strict scrutiny and must meet a compelling government interest to be upheld.

Age, on the other hand, is not considered a suspect classification by the Supreme Court. Laws or actions that discriminate based on age are subject to a lower level of scrutiny, known as rational basis review. Under rational basis review, a law is considered constitutional as long as it is rationally related to a legitimate government interest.

Therefore, the correct answer to your question is: Age. Age is not considered a suspect classification according to the Supreme Court.