Universality is the correct answer
"The curtains were covered in dust and smog, like the rest of the city, both slowly decaying in their age."
Answer: A. It is always consistent and is stated overtly throughout the poem.
Explanation:
The theme reflects the subject, the main idea. The theme is something consistent that should guide the words chosen to express what you want.
The theme is a statement. An idea about a subject.
