For his research methods class project, Hiro is studying the effect of pet ownership on stress levels. Although a lot of research has been done on dog and cat owners, not much is known about other pets so Hiro decides to study bird owners.

The correct answer is : C. He recruits his birds owners by e-mailing members of the National Bird  Owners Association and asking for participants.

Explanation:

This technique is used by researchers who rely on their own judgment when choosing members of a specific population to participate in a certain study.  It focuses on particular characteristics of the population in mention that are of interest which may enable Hiro to answer the stress level.

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.

answer; ///i believe the correct answer is the empire state building;