The first variable in expectancy theory involves how much effort a person must exert to ) receive a given rewardb) attain a certain level of performancec) finish the job in the shortest period of timed) finish the job with the lowest possible standards

Your corect answer is D. fishish the job with the lowest possible standards :)

Explanation:

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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.