Deadweight loss is a cost to society created by market inefficiency, which occurs when supply and demand are out of equilibrium. Mainly used in economics, deadweight loss can be applied to and deficiency caused by an inefficient allocation of resources.
Price break is a reduction in price, especially for bulk purchase.
A tax is a compulsory contribution to state revenue, levied by the government on workers’ income and business profits, or added to the cost of some good, services, and transactions.
So, your answer is C, tax.
Hope this helps :)
