A waitress assumes a group of poorly dressed customers to be ungenerous tippers. She doesn't pay much attention to them during their meal, forgets to bring their drinks, and doesn't ask if they want dessert. In the end, she gets the result that she expects, a very small tip. This is an example of

Id say Prejudice, or a dont judge a book by its cover situation

Explanation:

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.