Conflicts arise when . A. values differ or are questioned B. power is used to manipulate C. perceptions vary D. all of the above Please select the best answer from the choices provided. A B C D

D. all of the above

Explanation:

Conflict can arise when people have conflicting goals. It can also arise when power is being manipulated and rules and regulations are not being followed. Conflicts thus are a  clash of interests such as personal motives, racial and political and may be national or international, etc. Hence all the above is correct.

Answer (d) may increase or decrease porosity through dissolution or deposition;