9. Prior to the Columbian Exchange, exposure to infectious disease was more common in Europe than the Americas primarily due to
A) superior hygienic practices in Native American societies
B) Europe's larger population
C) the use of inoculation by Native Americans to combat the spread of disease
D) Europe's smaller geographical size

John recently received his semester grades and found that he had failed two courses. he says the reason he failed the two courses is that they were taught by female professors. john believes that women are really not smart enough to teach at the college level. in this example, the female professors are a) spacegoats and being blamed for john's grades b) being discriminatory toward john c) probably not smart enough to teach in a college d) prejudiced against john because he is male