Jackie's parents always taught her that she ought to "put on a happy face" and always appear happy, even when she is not. according to research on self-perception theory, what effect does this behavior have on her corresponding internal state? it makes her seem like a fake. it works-behaving as if she is happy can actually make jackie feel happier. it does not work and actually makes some people even unhappier. none of the above are correct.

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.