A mineral has all of these things so d. All of the above.
Marginalism is the study of how much extra use is gained from incremental increases in the quantity of goods created, sold, or consumed.
Option: A
Explanation:
Marginalism is an important theory of economics. It is the study of quality of products for judging its power to serve extra use by increasing its number incrementally. Marginalism prevails in that condition where quantity of products slightly increase in respect of creation, selling and consumption.
Marginalism does not exist in the situation of no surplus or no shortage means in equilibrium condition. A good's capacity of giving extra service on extra use is called marginal service capacity or marginal productivity. For reaching the satisfaction level of buyers extra use of increased quantity of good is required.
MIXED ECONOMY
Is the name given to an economy that may contain market, command, or traditional economic systems.
I believe the answer is: Gender role
Gender role refers to a set of behaviours that is expected by society to be performed by a certain gender. In almost all society, women generally expected to be involved in feminie activities such as singing and dancing, and the men are generally expected to be strong and love different forms of physical activities.
