Which type of correspondence pertains to the physician's private life, such as notes to friends or letters about the physician's personal business interests?

The ________ are small air sacs that support a network of capillaries used for oxygen and carbon dioxide transfer.

A. trachea B. alveoli C. bronchi D. bronchioles

Which of the following questions would NOT be asked when using a critical approach in a sociological study of sports?

A. Who is advantaged by existing forms of organization in sports? B. What is the most efficient way to organize spectator sports? C. Who has power in sports and how do they use it? D. Who is disadvantaged by the prevailing ideas and beliefs associated with sports?