Final answer:
The participants in DeLongis et al.'s study likely included a variety of individuals experiencing daily stressors, but their specific demographics are not detailed in the available information. Their study examined the relationship between daily hassles, life events, and health status.
Step-by-step explanation:
The participants used in DeLongis et al.'s study were not directly described among the given options. However, based on the information provided, their study, 'Relationship of daily hassles, uplifts, and major life events to health status,' involves the exploration of daily stressors and their impact on health. These daily stressors can be seen in various forms, such as chronic and acute stress. The participants in DeLongis et al.'s study likely included a broad demographic to assess these everyday stressors. While not specified in the options, the study investigates how daily hassles, alongside life events and uplifts, contribute to overall health status in a nondiscerning manner across various kinds of participants.