Answer:
Option "a" is correct.
Step-by-step explanation:
Below is the given values:
The last year supply of Cocoa nibs at $9 = 10 pounds
This year the supply of Cocoa nibs at $12 = 10 pounds
The supply and price of a commodity are directly related to each other. Thus it is given that price increases from $9 to $12. So, the producer will induce to supply more quantity when the price increases.
Therefore, Option "a" is correct.