The fourteenth amendment: a. represented a compromise between the moderate and conservative positions on race. b. marked the most important change in the u. s. constitution since the bill of rights. c. placed into the u. s. constitution an essential holding of the dred scott decision. d. passed despite the opposition of charles sumner. e. specifically defined suffrage as one of the civil rights to which freedpeople were entitled.

b. marked the most important change in the U.S. Constitution since the Bill of Rights.        

Explanation:

           The Constitution of the United States is the written legal document of the United States federal government according to which the function and the structures of the U.S. government works. It also provides the basic rights to the citizens of United States.

          The Bill of Rights of the U.S. Constitution is the first ten amendments that guaranteed certain fundamental rights to the U.S. citizens such as freedom of speech, worship and assembly, etc.

           The fourteen amendment to the United States' Constitution was ratified in the year 1868. It provided citizenship to the people through naturalization or by birth in United States to all including the former slaves and granted equal protection to all the citizens of the laws.

Hence the correct option is (b).

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.