Valentina was a mexican immigrant in 19th century america. she lived in a nuclear family that had a very close relationship with maria and carlos, two other immigrants, who acted as godparents to valentina. maria and carlos were always very warm and affectionate toward valentina, who in turn, respected and loved them. valentina's family is an example of a family that practiced

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.