Answer:
By describing how each type is made.
Explanation:
Jackie Craven's article "Introduction to Found Poetry" explains how various types of "found poetry" came about, and how each type is exclusive of certain things. The article provides an insight into such types of poetry and how anyone is capable of producing 'poetry'.
In this article, Craven was able to make the readers become aware of the different types of found poetry by providing the different types of such poetry. By providing a list of each type and describing them in detail, such as the "Dada poetry", "Centos" or the "Blackout Poems" etc. the readers are made aware of such different types.
Thus, the correct answer is the first option.
