Age is a major risk factor for heart disease, yet researchers often choose to study factors that people have control over, such as diet and exercise. In this example, age is a _____________ variable while diet and exercise are_____________ variables.

The most powerful organizations in China's communist party-state are the

a. National Party Congress and the Central Committee. b. Politburo and the Standing Committee. c. Standing Committee and the Central Committee. d. Politburo and the Secretariat. e. Politburo and the Central Commission.

A candidate running for office first needs the nomination by winning over voters and party leaders through _______.

a. general election campaign b. national convention c. nomination campaign d. an endorsement phase e. ticket-splitting