Plz help me with this its hard
question below

Known officially as a parliamentary democracy, but sovereign to the united kingdom, which canadian official is the head of canadian government? a) the president of canada b) the prime minister of canada c) the governor general of canada eliminate d) the royal canadian mounted police

In the kingdom of saudi arabia the government controls every aspect of oil production which makes up the majority of the country's economy. while other businesses are owned by individuals, the biggest segment of saudi arabia's economy is oil production. saudi arabia's economy would best be described as a) entirely market. b) almost entirely command. c) a mixture between just market and traditional. d) a mixed economy with large amounts of command.

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.