Answer:
The correct answer is option C. "all of these choices could be considered working for the public".
Step-by-step explanation:
Working for the public interest is considered as any effort towards improving the current state of human rights, health or finances. In this example, all the options could be considered as working for the public interest. As a member of congress, a politician could make changes in legislation that improve human conditions in society. Seeking military service as a career, is a way to support the conservation of human rights such as peace and freedom. Searching for a cure for a disease is a clear way to work towards human's health.