Commerce is a.
an official declaration that formally states a group's opinion or intentions
b.
the name given to taxes on the import and export of goods and commodities
c.
an incident where two sides disagree in a small argument or fight.
d.
the buying and selling of goods that takes place between two groups, especially countries.

D - The buying and selling of goods that takes place between two groups, especially countries.

Explanation:

Have you ever heard the term: Made in China or Imported from France?

That is because items are made in these countries and sent to where you live.

Which us what commerce is.

Hope this Helps!!

:D

c. mass = force / accellaration

step-by-step explanation:

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.