Nontariff barriers are: a. numerical limitations on the quantity of products that a country can import
b. rules, regulations, inspections, and paperwork which make it more costly or difficult to import products
c. taxes levied on the value of imported goods
d. all of the above

The correct answer is the option D: All of the above. T

Explanation:

To begin with, the term known as "Non-Tariff Barriers" in the field of economics and business management refers to the barriers imposed by the government to the trade of imports and exports of goods and services in a country with the main difference that they use other mechanism rather than the commonly imposition of tariffs. Therefore that this tool can refer to rules, regulations or numerical limitations and many other impositions. That is why that it consists of any obstacle to international trade.

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.