What is TRUE about social mobility in the United States? OA
In the past, social mobility has been very rare.
ОВ.
There is usually more downward mobility than upward mobility.
O c.
More recently, the middle class has become smaller.
OD.
The opportunities for upward mobility continue to grow rapidly.

Children begin to use tools at about what age? a. 18 months b. 2 years c. 1 year d. 6 months

Astudy that involves interviews of adults is eligible for expedited review. the researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. no additional changes are planned. which of the following statements about review of the revised protocol is accurate? the research would only be eligible for expedited review if the adolescents are capable of understanding the same consent forms used for the adult population. the research would only be eligible for expedited review if the adolescents have been declared to be emancipated minors. the new research would need full review by a convened irb because children are a protected population. unless the nature of the questions would raise the level of risk to > minimal for adolescents, the research would still qualify for expedited review.

Thomas jefferson was alarmed by the fierce debate over warning americans about its threat to national unity. 1.) slavery 2.) the powers of congress 3.) the missouri compromise 4.) escaped slaves