Sometimes economists disagree because their scientific judgments differ. which of the following instances best reflects this source of disagreement? a. one economist believes everyone should pay the same percentage of their income in taxes; another economist believes that wealthier citizens should pay a higher percentage of their income in taxes. b. one economist believes the government should tax a household’s income; another economist believes the government should tax a household’s consumption. c. one economist believes that equality should be valued over efficiency in policy decisions; another economist believes that efficiency should be valued over equality in policy decisions. d. one economist believes that manufacturing firms should face greater regulation to preserve the environment; another economist believes the government should not intervene in free markets.