D. because all listed on D are much more high tech (smart) than anything in A,B, and C.
Many jobs require a license or certification, such as; doctor, massage therapist, dental hygienist, and a school teacher. All of these jobs require a license or a certification. There are many more jobs that require these things, but I only named a few. :)
Answer
An economist engineer suggest that the 21st century has seen rise in number of online market and platforms that offer competition to the traditional ways of trade
Explanation
Let's take a look at eBay, Airbnb and Uber which are all marketing platforms where customers can acquire services and goods with just click of the phone button. Goods and services are currently offered for users provided they have access to internet connection with a good gadget. Economist engineers explain the need to understand the manner these markets are designed with more concern on mathematical models and techniques.
Answer:
Datagram Protocol is a communications protocol that is primarily used for establishing low latency and loss tolerating connections between applications on the internet. It speeds up transmissions by enabling the transfer of data before an agreement is provided by the receiving party.
A natural barrier that faces Argentina when it sells beef to Siberia is distance.
<h3>Why distance is a barrier to trade?</h3>
Due to the fact that markets within countries are typically closer together than markets between countries, distance reduces international trade in comparison to domestic trade. Most overseas markets have higher transportation expenses than they do for domestic markets, frequently by a significant margin. Given that distance seems to restrict trade more than can be compensated for by transportation, it is possible that distance is also linked to greater non-transportation trade costs.
For example, the price of carrying the beef from Argentina to Siberia could make it too expensive even though farming beef there may be less expensive than raising beef in the freezing cold of Siberia. Thus, one of the inherent obstacles to international trading is distance.
Learn more about trade barriers here:
brainly.com/question/27863334
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