Answer:
a. poems
c. books
d. speeches
Step-by-step explanation:
The above options are correct.
Extended metaphor is known to be a rhetorical device which is a version of metaphor. Metaphor is a figurative language that is used to compare two thing which are dissimilar. Extended metaphor works the same way as metaphor. It extends to multiple lines, stanzas or paragraphs of poetry and prose.
Extended metaphor is found in poems, books (literature) and speeches in order to further explain a concept. The further explanation allows readers or listeners to adequately visualize the explained concept in terms that they already understand.