C is correct. While all Layer 2 devices split collision domains, switches create a separate collision domain for each port. A, B, and D are incorrect. A is incorrect because hubs are Layer 1 devices and extend collision domains. B is incorrect because a bridge is a Layer 2 device, but can split the network only into two collision domains. D is incorrect. Solution C is correct. While all Layer 2 devices split collision domains, switches create a separate collision domain for each port. A, B, and D are incorrect. A is incorrect because hubs are Layer 1 devices and extend collision domains. B is incorrect because a bridge is a Layer 2 device, but can split the network only into two collision domains. D is incorrect..