Which of the following is a disadvantage of using online, mobile, and social media for advertising?
A) The costs are high.
B) Audience selectivity is low.
C) The audience controls ad exposure.
D) The interactive capabilities are low.
E) There is little scope for personalization.

Afederally funded research study involving children 8 to 12 years old involves collecting a single voided urine sample to assess the frequency of asymptomatic proteinuria (higher amounts of protein in the urine without any signs or symptoms of illness or infection). your irb has determined that assent of children age 8 and older is required for the study. a 10-year-old firmly declined to participate in the study described above. which of the following procedures best describes the action to be taken by the investigator? a. honor the child's decision b. consent both of the child's parents instead c. consent one of the child's parents instead d. request the child reconsider assenting to the study