After continued droughts for three years in a region, the demand for rainproof metal coatings decreases, but the supply remains high. That means producers have to _ the prices for metal coatings.
If this trend continues for a few more years, the number of producers who make these coatings will _

decline, decline

Explanation:

if there's no one buying producers have to reduce prices as they have of product but no buyers. If there are still no buyers after a few more years many producers will not be able to afford to stay in the business

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.