What is an example of cultural diffusion? A. Moroccan troops capturing the city of Gao after invading the Songhai Empire
B. Askia Muhammad constructing universities and schools in the city of Timbuktu
C. Mansa Musa making a pilgrimage to Mecca and displaying the wealth of Mali
D. people of the Ghana Empire practicing Islam after interacting with Arab traders

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