Lydia is 48 years old, single, outspoken, and very bright. She majored in philosophy as an undergraduate. As a student, she was deeply concerned with issues of discrimination and social justice, and she participated in anti-nuclear demonstrations. Which of the following alternatives is most probable?

a. Lydia is a U.S. Congresswoman.
b. Lydia is a U.S. Congresswoman and active in the feminist movement.
c. Lydia is a U.S. Senator.
d. Lydia is a U.S. Senator and active in the feminist movement.