Which of the following industries is part of a dynamic environment, meaning the market is constantly changing and updating?

In the above figure, suppose the economy is initially on the demand for money curve MD1. What is the effect of a fall in the nominal interest rate?

A) The demand for money curve would shift rightward to MD2. B) The demand for money curve would shift leftward to MD0. C) There would be a movement upward along the demand for money curve MD1. D) There would be a movement downward along the demand for money curve MD1.

"The income elasticity of a good is positive if a consumer increases the total spending on that good as a result of an increase in its market price." Do you agree or disagree? Why?

What will be an ideal response?