"questions about serving sizes perplexed us all. in some cases, the survey provided weird but guides — for example, it depicted what a half-cup, one cup or two cups of yogurt looked like with photographs of bowls filled with various amounts of wood chips. other questions seemed absurd. "who on this planet knows what a cup of salmon or two cups of ribs looks like? " walt asked." this is an example of

Questions that one is not having access to the information.

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.

the telephone is the answer