The question above does not present the poem to which it refers. This makes it impossible for me to answer your questions, but I'll show you how to answer them.
To answer a question you must know that:
In this case, a strong image is one that goes through a very detailed and thorough description. The author's objective is to allow the reader to have a strong immersion in the text and to be able to feel, touch and see what is being presented.
More information:
https://brainly.com/question/23904954?referrer=searchResults