Final answer:
The phrase symbolizes the children's creation of beauty from their emotional and intellectual capacities, resembling the guidance of a lantern.
Step-by-step explanation:
The phrase "made new lanterns out of their hearts and minds" symbolically represents B. the children's vision of beauty. This figurative expression suggests that the children are using their emotional (hearts) and intellectual (minds) capacities to create or envision something beautiful and meaningful, much like the luminescent and guiding light of a lantern. The phrase implies a transformation or creation of beauty from within themselves, signaling an inner strength and a bright, hopeful vision amid challenging circumstances.