High-ranking members of the ruling party select the

How does Knowledge Networks ensure participation in its Web-based surveys?

a. Respondents are paid a small sum every time they participate. b. Respondents are selected from the cell-phone-only segment of the population. c. Respondents are randomly sampled. d. Respondents must own their own computer.

The marketing boards which existed primarily in Africa were set up to:

a. buy agricultural products from farmers to keep the demand and price steady b. provide incentives for farmers to invest in new technologies c. improve the lives of rural farmers d. encourage the diversifying of agricultural products for a larger market