[Solved] Erotica is sexually explicit material that is characterized by: A) emotional and romantic involvement. B) periodic violence. C) incest and sexual abuse. D) artistic qualities. Demand and Supply: Demand and Supply are fundamental economic concepts that describe the quantities of goods or services that consumers wish to purchase at various prices and the quantities that producers are willing to sell. Efficiency Loss: Refers to the waste of resources that occurs when market conditions prevent the allocation of resources in a way that maximizes utility or welfare. Elasticity of Supply: A measure of the responsiveness of the quantity supplied of a good or service to a change in its price, indicating how producers react to price variations. Elasticity of Demand: A measure indicating how much the quantity demanded of a good changes in response to a change in the price of that good.