Someone who has a strong ego identity a. only thinks of himself or herself, and rarely considers the feelings of others. b. is comfortable with the type of person he or she is. c. feels that he or she is worthwhile. d. is confident about his or her future goals and plans.

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease