Senate elections are held every years and of the Senate seats will be up for re-election. a. 4; all b. 4; half c. 2; all d. 2; half

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money

Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.