which of the following sentences from “Human Thinking, Robot Thinking” by Sandy Fritz proves that humans get better at doing things with practice?

a. “Artificial neural networks are the most ambitious programming projects ever attempted.”
b. “People who practice throwing a ball eventually get better and better at the task.”
c. “Scientists working on artificial neural network programs for computers have carefully modeled the behavior of the human nervous system.”
d. “Human nerve cells are called neurons.”