Iwill give brainliest to whoever is correct

During adolescence, most people develop a greater sense of independence a. true b. false

Why are radio observatories located in valleys far away from urban centers? a. to shield them from electromagnetic interference b. to avoid sound pollution c. to avoid disturbing people living in the city d. to shield them from water vapor

Some studies have found that what percentage of students have cheated in some form? a. 10% b. 25% c. 45% d. 75%