Final answer:
In Ray Bradbury's short story 'The Veldt,' George and Hazel first see a video of the African veldt on the TV. The TV is a part of a futuristic nursery.
Step-by-step explanation:
George and Hazel first saw something on the TV in Ray Bradbury's short story 'The Veldt.' In the story, they see a video of the African veldt, a natural environment with lions and other animals. The TV in the story is a part of a futuristic nursery that can project realistic and immersive environments.