Which of the following situations is an example of external migration?
a. moving from canada to the united states
b. moving from california to florida
c. moving to a town a few miles away
d. moving to a new house down the street

a) moving from Canada to the United States.

Explanation:

External migration occurs when a person immigrate from one country to another country. Therefore, this is a movement BETWEEN countries.

When we take a look at our options we see that the option involving 2 countries would be:

A) moving from Canada to the United States.

Explanation:

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

answer; i believe the correct answer is (general);