Since suppliers are so close to the market, they are valuable sources of information about consumer problems, marketing opportunities, and new product possibilities

Which of the following occurs as the level of service decreases?

A) Cost of waiting time decreases, and cost of providing service decreases. B) Cost of waiting time decreases, and cost of providing service increases. C) Cost of waiting time increases, and cost of providing service decreases. D) Cost of waiting time increases, and cost of providing service increases. E) Cost of waiting time first decreases, then increases; while cost of providing service decreases.

Optimal challenges are those that __________

a. divert cognitive resources from learning b. are consistent with a deliberate goal orientation c. help people expand their abilities and learn from failure (Recall, Moderate) d. help people expand their abilities while avoiding failure