C.) It is a secret route that slaves took to escape from Southern slave states to the North. Even though Harriet Tubman started this, it wasn't to help slaves become free it was to help them escape so it's C
c) it is a secoret rout that slaves took to escape from Southern slave states to the North.
Answer:
sex
Explanation:
an outcome with benefits that are greater than the costs
so b.
They would step harder because their body uses more force on each step.
