Final answer:
Persephone and Echo's stories are connected to Narcissus through themes of love, transformation, and divine consequence. Their tales involve tragic and unrequited love, echoing Narcissus's own fate.
Step-by-step explanation:
The stories of Persephone and Echo are similar in regards to Narcissus as they both involve themes of desire, entrapment, and consequences from interactions with the divine. In Greek mythology, Persephone is abducted by Hades, which can be parallel to the entrapping nature of Echo's unrequited love for Narcissus.
Both tales highlight the tragedy and transformation stemming from the affairs between mortals and gods. Narcissus himself is a figure of tragic love, as he falls in love with his own reflection, leading to his demise. Similarly, Persephone's tale involves a forced love, and Echo's tale a denied love, both resulting in a metamorphosis—Persephone becoming the queen of the Underworld for part of the year, and Echo being reduced to a mere voice.