If you receive a phone call that seeks to verify or update personal information you should: a. ask to speak to a supervisor.
b. ask several questions of the solicitor to verify their authenticity.
c. obtain their name and address in case you need to contact them in the future.
d. obtain their name and phone number and call them back to verify their credentials.

Which of the statements best describes why the aggregate demand curve is downward sloping? an increase in the aggregate price level causes consumer and investment spending to fall, because consumer purchasing power decreases and money demand increases. as the aggregate price level increases, consumer expectations about the future change. as the aggregate price level decreases, the stock of existing physical capital increases. as a good's price increases, holding all else constant, the good's quantity demanded decreases.