Which occupation is not an example of specialization?

Ken's Lawn Service Co operates in a perfectly competitive market. Why doesn't Ken try to increase his revenue by lowering his price below the prevailing market price?

a. He can sell as much as he wishes to at the market price. b. He faces a perfectly inelastic demand curve, so a price change will have no impact on revenue. c. Government regulations prevent it. d. If he lowers his price, he will lose all his sales since he faces a horizontal demand curve. e. Agreements with other lawn service companies require him to sell at the market price.

Other things the same, if the U.S. interest rate falls, then U.S. residents will want to purchase

a. more foreign assets, which increases the quantity of loanable funds demanded. b. fewer foreign assets, which decreases the quantity of loanable funds demanded. c. more foreign assets, which increase the quantity of loanable funds supplied. d. fewer foreign assets, which decreases the quantity of loanable funds supplied.