1. Why did the colonies think they needed enslaved Africans? A. Manufacturing workers were needed in England
B. Shipbuilders were necessity in the New England colonies
C. Clergy members were in high demand in the Middle colonies
D. Laborers were needed on the indigo, rice, and sugar plantations in the Southern colonies

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.