Answer:
A theme is what a book, paragraph, or sentence is about. An example would be: the ocean, the sky, the air, animals, grass, houses, and any topic/theme that you would want to write about.
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Explanation:
It is an example of 3. personification.
Personification is a figure of speech where non-human entities are given human abilities or characteristics. So, flowers usually cannot smile (it is something that humans/animals can do), which is why it is a personification. Carpe Diem is the theme of this poem, but not the correct answer here.
The answer is D. Interjections express strong emotional excitement.