Answer:
c. Offer panels in a “buy one get one free” special.
Step-by-step explanation:
a. Price increase: If he sells the same number of fence panel, his profit margin WILL increase because his revenue will increase.
b. Use cheaper lumber: If he sells the same number of fence panel, his profit margin WILL increase because he will reduce expenses.
c: Buy 1, get 1 free: If he sells the same number of fence panel, his profit margin <u>WILL NOT</u> increase. Indeed, it will decrease by giving lots of FREE panels.
d. Optimize resources: If he sells the same number of fence panel, his profit margin WILL increase because he will reduce expenses.