In the Keynesian liquidity preference framework, an increase in the interest rate causes the demand curve for money to ________, everything else held constant

Some economists believe that high concentration within industries is _________, and we should __________

a. c, d, and e b. terrible; deregulate the industries c. beneficial; encourage it d. inevitable; learn to live with it e. not inevitable; break up monopolies

One of the reasons why men have shorter lines at public rest rooms is because their bathrooms have many more urinals than toilets so turnover is much faster. The efficiency of urinals in terms of water usage and time savings seems clear, yet no one uses urinals in their own homes. This seems to be a curious puzzle. A good economic naturalist should have some explanation for this lack of urinals in homes. What reasons can you give for this puzzle?

What will be an ideal response?