Tariff makes the most sense. Embargo is a ban on goods or a country, subsidy is money granted from the government to a business and has nothing to do with trade, quota is a limited amount of a product and again doesn't really have anything to do with trade.
The definition of environmental deterioration is the deterioration of a the environment through depletion of resources
Such as
Air, water, and soil
I hope this helps :)
Answer:
One thing that I enjoyed the most about guiding children's behaviour and moral development is when I show them how I feel and encourage them to use words to solve problems