Is NOT listed in the passage as a special part of the cactus A. the roots B. the stem C. the spines D. the flowers?

Oh, dude, like, the passage totally doesn't mention the flowers as a special part of the cactus. So, like, the answer is D. Flowers are just there to look pretty, not to be special, you know? Just like that one friend who always shows up late to the party but still gets all the attention.