Which central idea expresses a viewpoint? 1.There are three neighborhood pools, two playgrounds, and one library in our community. 2.A teen center would be a great addition to the community center, providing teens with a place to go.3.Teenagers are discouraged from loitering in public places, such as store fronts and parking lots.4.Skateboarding is prohibited at the playgrounds as a safety precaution for young children.