Final answer:
About two-thirds of the freshmen take Humanities Core.
Step-by-step explanation:
In this question, the answer is two-thirds (B).
According to the given information, it states that virtually all first-year humanities majors take Humanities Core. Since virtually means almost all, we can consider this close to 100%. Therefore, if virtually all first-year humanities majors take the course, we can conclude that about two-thirds of the freshmen take Humanities Core.