11. What is a factory building an example of?

human capital

physical capital

an economic trade-off

technology

12. Which of the following is NOT a key economic question?

What goods and services should be produced?

How should these goods and services be produced?

Who consumes these goods and services?

How should it be ensured that goods and services are paid for?

11. A factory building is an example of physical capital.

12. The answer which is not a key economic question is How should it be ensured that goods and services are paid for?, whereas the first there questions are indeed key economic questions.

11. Correct answer choice is:

Physical capital

Explanation:

In economic science, physical capital refers to an element of production (or input into the method of production), like machinery, buildings, or computers. In economic theory, physical capital is one in all the 3 primary factors of production, additionally referred to as inputs production function. Most significant, as corporations invest in physical capital, the whole country edges. The bigger productivity ensuing from investment in physical capital ends up in the economic process and therefore the potential for a better customary of living.

12: Correct answer choice is:

How should it be ensured that goods and services are paid for?

Explanation:

This is not an economics question, rather it's about the business owners' dealing related to the money recovery of their products. Economics only deals with how whom, and when to produce any product. It's not their concern whether the money is paid to the business owners or not.