Decentralization of governmental authority comprises one of the central components of which perspective?

It is important in a matched-subjects design for researchers to assign each matched set of participants randomly to the conditions primarily because

A) all of the critical variables should have been identified by consulting published studies. B) of the requirements to keep researchers blind as to condition. C) of the requirements to keep participants blind as to condition. D) random assignment within sets can control for unidentified confounding variables.

When Russian hackers allegedly attacked the Democratic National Committee’s email servers during the 2016 presidential campaign and released embarrassing emails from them to the public, this incident raised serious ______ questions for many Americans.

a. propaganda b. cybersecurity c. superterrorism d. preemption e. strategic policy