A) buying a home INCORRECT Buying a home is a property right that is not limited to U.S. citizens. In fact, lawful permanent residents (green card holders) and even some non-immigrant visa holders can purchase real estate in the United States. The right to own property is considered a fundamental right that is protected under the law for all persons, regardless of citizenship status. While there may be some restrictions on foreign ownership of certain types of land (such as agricultural land in some states), generally, buying a home is open to non-citizens. Therefore, this is not a right reserved exclusively for U.S. citizens.
B) earning an income INCORRECT Earning an income is a right available to all individuals who are authorized to work in the United States, including citizens, permanent residents, and those with work visas. The right to work and earn a living is not tied to citizenship; it is a basic economic right. Non-citizens with valid work authorization can be employed and earn income, and they are subject to the same tax obligations as citizens. Even undocumented immigrants can earn income, though they may face legal consequences. Therefore, earning an income is not a right reserved for U.S. citizens.
C) serving in the military INCORRECT Serving in the military is not exclusively reserved for U.S. citizens. In fact, the U.S. military allows lawful permanent residents (green card holders) to enlist, and in some cases, non-citizens with certain visas may also serve. Non-citizens who serve in the military can even expedite their path to citizenship. While certain high-level security clearances and officer positions may require citizenship, enlisted service is open to non-citizens. Therefore, this is not a right reserved solely for U.S. citizens.
D) running for federal office CORRECT Running for federal office is a right reserved exclusively for U.S. citizens, as explicitly stated in the U.S. Constitution. Article I requires members of the House of Representatives to have been citizens for at least seven years and Senators for at least nine years. The President must be a natural-born citizen. These requirements ensure that federal officials have a strong allegiance to the United States and a deep understanding of its values. Non-citizens, including lawful permanent residents, are not eligible to run for federal office. This is a fundamental distinction between citizens and non-citizens, highlighting the special political rights that come with citizenship.