[Solved] An industry with a positive-sloping long-run supply curve is called a(n) ________ industry. A) constant-cost B) decreasing-cost C) increasing-cost D) decreasing-profit Vaginal Intercourse: A sexual activity involving the insertion of the penis into the vagina. Streetwalkers: Prostitutes who predominantly find their customers by walking in public places, often on the streets. Sex Workers: Individuals who engage in providing sexual services in exchange for money or goods, a practice that varies widely in legal and social acceptance. Child Pornography: Illegal material that depicts minors in explicit sexual situations, which is prohibited and punishable by law.