Which building is primarily focused on the sciences?

The E.R. Knox Science Building is specifically intended for the sciences, making it the best choice for this question. This building is likely equipped with laboratories, classrooms, and facilities tailored to various scientific disciplines such as biology, chemistry, and physics. These specialized features provide an environment conducive to science education and research.

In contrast, while the Math, Science, and Engineering Technology Center might suggest a focus on multiple academic areas, the name indicates a broader scope that includes engineering and mathematics, not just the sciences. The George C. Wallace Administration Building is primarily centered on administrative functions, and the Library Building serves educational resources and research materials across all subjects, rather than focusing specifically on the sciences. Hence, the E.R. Knox Science Building stands out for its direct emphasis on scientific disciplines.