Search warrants: a. do not expire b. must be signed by a police officer c. must be executed or served in a reasonable fashion d. can be used for fishing expeditions

d

explanation:

civil rights vs. civil liberties. civil liberties are basic freedoms while civil rights are the basic right to be free from discrimination based on such characteristics as race, disability, color, gender, national origin, and others. discriminating against an employee on the basis of gender is a civil rights violation.

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.