Answer:
The correct answer is option c.
Step-by-step explanation:
After the widespread press reports about the dangers of contracting mad cow disease, the consumers in the US will not prefer to buy beef from Canada. This will cause demand to decline. As the demand decreases at the same price level, the demand curve will shift to the left.
This leftward shift in the demand curve will cause the quantity to decline. The supply curve will intersect the demand curve at a lower point. The price of beef will also eventually decline.