Nations usually specialize in industries where they have a
comparative advantage.
quaternary sector.
secondary sector.
primary objective.

The correct answer is comparative advantage.

The nations prefer those those type of businesses, which provide a comparative advantage as compared to the other nations present in the world. In this case, the competition decreases, as the nations are able to produce such things, which cannot be done by others. These cost for the establishment and running these industries in these nations is lower than other nations.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.