Question

if saudi arabia’s government puts a limit on how much israeli dead sea salt it will import this year, what trade barrier is this? opportunity cost embargo tariff quota

Explanation:

Opportunity cost is about the value of the next - best alternative, not a trade barrier. An embargo is a complete ban on trade. A tariff is a tax on imports. A quota is a limit on the quantity of a good that can be imported. Since the problem is about a limit on the amount of salt to be imported, it fits the definition of a quota.

Answer:

Quota