The signal would be: prices.
When the prices of a certain product is high, it would give signals to the seller to increase the production of that product.
the prices also determine how much material and type of production technique that the sellers can afford to use.
I would say water or infrastructure but i think water because in some countries it is scarce
Answer:
B: Purposive incentives
Explanation:
Purposive incentives appeal to someone's concern about a cause because they feel satisfaction about taking part of something they believe in and agree with, and it is based on ideologial principles and ethical beliefs . It's a benefit for them because everyone needs some kind of reward, but it does not come necessarily in form of material rewards or bonus.