Answer:
Visiting the Happy Medium and looking into the crystal ball were important moments in the story "A Wrinkle in Time" by Madeleine L'Engle because they helped the characters gain a better understanding of the evil force they were fighting against, as well as the power of love and hope.
The Happy Medium showed the characters a distant planet consumed by the darkness of the evil force, allowing them to see firsthand the destruction it was capable of. This helped to solidify their resolve to fight against it and protect the people they loved. It also showed them that there was still hope, as they were able to see a small glimmer of light and love in the midst of the darkness.
Looking into the crystal ball was also significant because it allowed the characters to see their loved ones back on Earth, giving them the motivation and strength to keep fighting. Meg, the protagonist, was able to see her mother, who had been taken by the evil force, and this gave her the courage to continue on her journey.
The characters react to what they see in different ways. Meg is heartbroken when she sees her mother trapped by the evil force, but this only strengthens her resolve to save her. Charles Wallace is excited by the prospect of the adventure ahead, but Mrs. Whatsit warns him of the danger and the need for caution. Calvin is amazed and awed by the powers of the Happy Medium and the crystal ball.
Overall, these experiences help the characters to gain a greater understanding of the challenges they face and the power of love and hope in the face of darkness. They are inspired to continue on their journey, even when the path ahead seems dark and uncertain.