Under the Compromise of 1850, which territories were able to choose by popular sovereignty whether or not to allow slavery? A.
Kansas and Nebraska
B.
New Mexico, Utah, and California
C.
New Mexico and Utah
D.
Oregon and Washington

Correct answer is C. New Mexico and Utah

Explanation:

C is the correct answer because California was admitted as a free state, and Utah and New Mexico could decided on their own whether they want to allow slavery or not. Of course that is why option B is not correct.

A is not correct as this two states settled that question in the famous Kansas - Nebraska Act from 1854.

D is not correct as it permitted slavery in Washington.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

i think you really need to revive you answer! : d