Answer:
The correct option is B) Plains Indians could hunt more efficiently.
Step-by-step explanation:
After the Spaniard's introduction of horses to North America, the life of these people changed. They did not want to sit at homes. Rather they wanted to travel. The lives of the tribes of North America completely changed by this introduction of horses. They began hunting more efficiently. They now had the ability to settle themselves as one place yet still having the opportunity to travel from one place to another.