Which sentence contains a restrictive clause?
1. The road, which was long and winding, took us deeper and deeper into the dark forest.
2. The parrot, which must have been tame, flew out of the tree and landed on my shoulder.
3. Aware that I could be bitten, I carefully approached the trapped dog, which growled at me.
4. I chose the player who ran fastest, but the other captain wanted the one with the hardest kick
1.