Who is the Secretary of Agriculture?

The Secretary of Agriculture plays a crucial role in overseeing the nation's farming, forestry, and food policies. This position is responsible for ensuring that Americans have a reliable supply of food, managing natural resources, and addressing agricultural issues on a national and international level.

Thomas Vilsack has served as the Secretary of Agriculture for multiple terms. His experience in this position is significant, and he has been associated with various initiatives aimed at rural development, renewable energy, and food safety. His background as a former governor of Iowa also lends him a strong connection to the agricultural community.

The other individuals listed in the choices have held different cabinet positions. Arne Duncan was the Secretary of Education, Kathleen Sebelius served as the Secretary of Health and Human Services, and Hilda Solis was the Secretary of Labor. Their roles, while pivotal in their respective areas, do not pertain to agriculture, reinforcing why Thomas Vilsack is the correct answer in this context.