What was generally true about segregated facilities?
A. Facilities for whites were more expensive to enter.
B. The same amount of money was spent to maintain facilities for African Americans and whites.
c. Facilities for African Americans were of poorer quality.
D. The same amount of money was spent to build facilities for
African Americans and.
APEX​

Facilities of African Americans were of poorer quality.

Explanation:

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.