Within economics, the variable is the factor that
a. must remain constant
b. can change
c. will never change due to market factors
d. will only change when demand increases

The correct answer is B. Within economics, the variable is the factor that can change.

Explanation:

An economic variable is the representation of an economic concept that can be measured or take various numerical values, that is, it can change according to different situations. Most of these variables must satisfy the condition of non-negativity; that is, they cannot be less than zero.

The Iroquois or Haudenosaunee are a historical indigenous confederacy in northeast North America. 

The Iroquois League was most significant because it helped to resist the expansion of Europeans in the area by helping the tribes. Each tribe also had its own leaders to make local decisions.

With the formation of the League, internal conflicts were minimized. The council of fifty ruled on disputes, seeking consensus in their decisions. 

Hope it helps.