All of the following are duties of united states citizens except: a. understanding their rights b. taking education seriously c. understanding what it means to be an active citizen d. learning about and understanding foreign governments and laws

The correct answer is D. Learning about and understanding foreign governments and laws

Explanation:

The term "citizenship" refers to the status people have as they belong to a nation and can participate directly or indirectly in the decisions of government and be protected by law. Additionally, in the U.S. and other countries the status of citizen is associated with certain duties that include exercising political rights by participating in democracy; understanding the government and laws and using it to protect oneself and others' rights; having an active role as citizen by contributing with actions; educating oneself and supporting education, among others that are related to the government, laws and rights a person has in a specific nation or country. This implies the on that is not a duty of U.S. citizens is "Learning about and understanding foreign governments and laws" because "citizenship" is related to the laws and government where one lives and therefore, it is necessary to understand the government and law of that nation rather than of foreign nations.

c. the dred scott v. sandford case,