Question

In the early 1800s, Englishman Abraham Darby invented a quicker, easier way to produce cast iron. In the 1850s, British engineer Henry Bessemer developed the first inexpensive process for mass-producing steel. These two events are an example of which type of relationship?

Answer 1

The above question has multiple choices;
a. Cognition
b. Correlation 
c. Causation 
d. Contextualization

The answer is B

The above sentence mentions nothing that the development of henry Bessemer's invention was made possible only because of Abraham darby's invention. Thus, both inventions have a correlation relationship with one another and do not indicate an event is the occurrence of the other event.