Which example might cause trade to be limited between countries?

1. The lifting of an embargo

2. Tariff reduction on imports

3. A quota on imports and exports

4. Decreasing safety standards on exports

6 answers

I'll be happy to check your answer. No guessing! That's really obvious!
@Writeacher i believe its 4
I disagree.

In order for trade to be limited between or among countries, something negative must have happened.

#3 fits the definition of negative — https://www.google.com/search?q=quota+on+imports+and+exports&oq=quota+on+imports+and+exports&aqs=chrome..69i57.1474j0j7&sourceid=chrome&ie=UTF-8
so what is it lol
Its 3. quota on imports and exports.
or option C