If a toddler see's his or her mother mowing the lawn one day and then pretends to mow the lawn at child care center, the toddler is practicing what?

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