The term scarcity in economics refers to the fact that:
a. economic wants are limited and resources are abused
b. even in the riches country some people go hungry
c. no country can produce enough products to satisfy everybody's economic wants
d. it is impossible to produce too much of any particular good or service in a market economy
The one that is the power granted to the legislative branch by the constitution is:
Expressed powers
One of the example of expressed powers is : the power to declare wars
hope this helps