Assurance refers to: a. the role of public health in ensuring that essential community-oriented health services are available, which may include providing essential personal health services for those who would otherwise not receive them b. ensuring that all citizens pay their fair share of taxes c. providing adequate animal control resources d. by-passing competence requirements for public health workers

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.