Standards act as barriers to trade because they tax imported goods in order to increase their price. Thus, option (c) is correct.
What is trade?
The process of buying and selling commodities and services is referred to as “trade.” Trade is a form of economic activity.
The tax on imported goods and services, which is an adverse effect of raising product prices, is the biggest obstacle to trade. As prices rise, there will be a shortage of goods.
Therefore, option (d) is correct.
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