Most significant psychological barrier to critical thinking

The correct answer to this open question is the following.

The most significant psychological barrier to critical thinking is mental effort.

The ability to analyze information being objective in order to make a judgment using the reason is what we understand for critical thinking. To do this, you have to evaluate data, sources, statistics, and numbers. Critical thinking is a way to make good decisions or solve complex problems. Mental effort can be a barrier of critical thinking in that it can derive in overthinking information or data, instead of trying to understand ideas or concepts that can be applied.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.

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.