Answer:
B. They support the topic sentence
Step-by-step explanation:
The sentences 2, 3, and 4 all give examples of how the first sentence is true.
Hence: "Other artists use cars to create their art. (2) Some paint or decorate the cars themselves. (3) One art car had hundreds of plastic dinosaurs glued onto it! (4) A Nebraskan artist built Carhenge, a replica of Stonehenge, out of old cars"
Hope this helps!!!