Imagine you are reading an article describing the national archives's goals to reduce its energy use. this article was published by the national archives on its official website in 2013. why would this source be considered reliable and credible?

The National Archives represents a primary source of information. A Primary source represents an individual or entity who is directly involved or has direct influence over the information that is trying to be presented.

In this case, the National Archives is an official government entity which is in charge of elaborating the stats from all government institutions and store historical data. This means its a direct source of information by the government, without any intermediaries.

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b