A reduction in production costs will result in a(n): a. rightward shift of the supply curve. b. increase in supply. c. greater willingness and ability of producers to supply a larger quantity at any given price. d. greater willingness and ability of producers to supply the same quantity at a lower price. e. all of these.

E. All of these

Explanation:

Supply is the ability & willingness of sellers to sell a good, at given price & period of time. Supply curve represents quantity supplied at various price levels, other factors remaining constant.

Change in Price leads to 'Change in Quantity supplied', movement on the supply curve. Change in factors other than price (eg : production costs) lead to  'Change in Supply' shift in the supply curve.

Change in production costs lead to Change (Increase) in supply. The supply curve shifts rightwards. There is more supply at same price levels, i.e more ability & willingness to sell at same price levels. It also implies indirectly that - same quantity of supply (ability & willingness to sell) is done at a lower price now.

So, all of the above points are correct

you had the wrong answer

true basically. have an awesome day ya'll.