Dressing as a boy, ______________ remained unnoticed and free to go about research on animal anatomy, which was conducted in slaughterhouses.

a. Vigee-Lebrun
b. Rosa Bonheur
c. Gustave Courbet
d. Jean Francois Millet
e. none of these are correct

b. Rosa Bonheur

a. Incorrect. Vigee-Lebrun did not dress as a boy to research animal anatomy.
b. Correct. Bonheur did dress as a boy to research animal anatomy.
c. Incorrect. Courbet did not dress as a boy to research animal anatomy.
d. Incorrect. Millet did not dress as a boy to research animal anatomy.
e. Incorrect. Bonheur did dress as a boy to research animal anatomy.