Which best explains why the supply of housing often cannot keep up with increases in demand?

The supply of housing often can not keep up with increases in demand because: 
Zoning laws prevent real estate developers from being creative; 
Supply and demand is a framework we use to explain and predict the equilibrium price and the quantity of good. A point on the market supply curve shows the quantity that suppliers are willing to sell for a given price. A point on the market demand curve shows the quantity that demanders are willing to buy for a given price. 

The type of bond found in many carbon-to-carbon bonds in canola oil but very few carbon-to-carbon bonds in butter, is ; c=cc-c c=c c=h c-h hope this .