Final answer:
Two ideas are being compared: love and a bubble, which suggests that love is transient and fragile like a bubble ready to burst.
Step-by-step explanation:
The haiku you've provided is a poetic comparison that draws a metaphorical parallel between two seemingly disparate ideas. The two ideas being compared are love and a bubble (Option B), which suggests that love is fragile and may end unexpectedly, akin to a bubble that bursts. The phrase "Teardrops left behind" implies the sadness that follows when love, like the bubble, disappears.