Sam is moving toward the end of his speech to members of his town's chamber of commerce. He has been talking about the problems many local small businesses are having with rents and taxation. A lot of them have been forced to close recently. As a local businessman himself, it is a topic he feels strongly about. He says: "That's the problem. So what's the answer? Do I really need to spell it out? Lower the costs! I know change isn't easy but, as the proverb says, you can't make an omelet without breaking eggs!" His speech was less successful than he'd hoped. Why?

a. His conclusion lacked a memorable closing remark.
b. His conclusion was not prepared by a transition.
c. His conclusion was too short.
d. His conclusion lacked a review of the main points.​