Basic freedoms in the United States:

A. can never be diminished under the Constitution.
B. must be balanced against competing interests, such as national security.
C. have vanished in the modern era.
D. are absolute; no restrictions are allowed.

B. must be balanced against competing interests, such as national security.

Explanation:

While the basic freedom in the US, is to grant each and every citizen the liberty to do as they wishes within the content of the law and constitution, the civil right is the action government should take to curb the excess or those acts that may jeopardize the freedom of others.

Hence, Civil liberties is defined as the protection of US citizens or minority against government actions. For example, the First Amendment of the Bill of Rights guarantees citizens the right to practice whatever religion they please.

However, Civil rights, on the contrary, is expressed to be the positive actions or measures the government should take to create and enable equal conditions for all Americans.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds