The key trade agreement that the US is currently negotiating is NAFTA, between Trump, Trudeau and Pena Nieto (the US, Canada and Mexico). This trade agreement has been in effect since the late 80's or early 90's and has far reaching consequences as whatever falls under the influence of it can be the subject of sanctions by the most powerful country involved which is the US in this case. Canada has significant softwood sales in the US which it needs to protect. Another trade issue is the importation of oil from Venezuela which is important to the US economy despite the oppostion to the democratically elected government in Venezuela so hopefully the US will temper its' opposition to protect those imports.
The answer is A.
The capillaries is the smallest form of blood vessel in the body. They enable the transfer of wastes, oxygen and nutrients to happen.
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