Number 2. I am having a hard time identifying this probability question, it wants me to identify if it's probability or no probability and which sampling method is used.

28 EXERCISE 2 . Identifying Probability and Nonprobability Sampling Methods in Studies 2. Study excerpt: "This study was a part of a multi-site prospective observational study of COPD [chronic obstructive pulmonary disease] patients to explore the relationship between depres- sion, inflammation, and functional status . . . Participants were recruited from various sources including outpatient clinics from three medical centers, pulmonary rehabilitation programs, a research database maintained by the investigators, queries of medical records and pulmonary function tests, Better Breathers Club, community pulmonary practices, advertisements, study website, and other referrals." A total of 282 patients with COPD were included in the study. Source: Lee, J., Nguyen, H. Q., Jarrett, M. E., Mitchell, P. H., Pike, K. C., & Fan, V. S. (2018). Effect of symptoms on physical performance in COPD. Heart & Lung, 47(2), 149-156. Excerpt from page 150. 3. Study excerpt: The focus of this quasi-experimental study was to determine the effect of a three-stage nursing intervention to increase women's participation in Pap smear screening. Using "random sampling methodology, each apartment in the target area was identified by a number. Numbers were then drawn from a random numbers table. Women were contacted by home visits. .. . By the end of this stage, 237 participants had completed the pre-test." Source: Guvenc, G., Akyuz, A., & Yenen, M. C. (2013). Effectiveness of nursing interventions to increase Pap smear test screening. Research in Nursing o Health 36())