The advantage the United States has over Canada for maintining a diversified economy is:
The U.S. has a greater labor resource.
Explanation:
A diversified economy is an economy that has different industries in its economic system. One advantage is that they don't depend on a single business or industry-leading it to increase its chances of development and growth. It is not directly related to the gold resource because today we trade with currencies as paper coins in physical and electronic representations that are used contribute to the government. Also, they don't have a direct impact on the amount of fresh water per capita because companies don't give water to the government they give money to it. Also, the land is not provided to the country by the companies, because it works the opposite way. So, the correct answer is labor resources. Because with different industries, labor resources increase in category and size, because if an industry doesn't develop well, the rest of them might have a different development.
Iodine is most reactive because it is very close to having a "full shell" which is 8 electrons so they are "eager" to gain the last electron to became balanced, so that makes it the most reactive. Hope that helps:)