Answer:
D. Stronghold's mission is to inspire Lakota youth by providing opportunities within the arts and sports for creative expression, and skateboarding is one way to accomplish this goal.
Step-by-step explanation:
The building of skateparks in Manderson and Pine Ridge by the Stronghold Society was to enable and motivate the youths around that area to do something that they enjoy and love doing.
The Stronghold Society has a mission to inspire Lakota youth. They did that by providing them the opportunities within arts and sports. This was to enable them to express themselves creatively and skateboarding is one of the ways they utilized to achieve the goal.
It was also to provide the kids a reservation area for funfair and creative activities. Skateboarding, arts, music, photography and sports were some activities that were brought up to inspire youths.