Option 1 -> "came to sight" means became visible, which doesn't capture the sense of vitality and energy implied by "came to life."
Option 2 -> "relived" means to experience something again, which is contextually inappropriate for a garden.
Option 3 -> "was invigorated" means was filled with energy and vitality, perfectly matching the sense of the garden becoming vibrant and flourishing.
Option 4 -> "appeared" means became visible, similar to option 1, missing the essence of renewed vitality.
Hence, Option 3: was invigorated -> "Came to life" describes the garden transforming into a vibrant, energetic state with the rains, and "invigorated" captures this sense of renewed energy and vitality perfectly -> correct