Answer:
Derived demand.
Step-by-step explanation:
Derived demand is when the demand for a product is dependent on the demand of another product. For example demand for labor can be seen as derived from the demand for goods and services. When there is more demand for goods and services, companies hire more and there is increased demand for labor.
Also in the given instance, demand for energy efficient windows is derived from the quantity of houses being built. The more houses that are built the more windows Anderson sells.