Complex sentence: Verizon FiOS is a bundled home communications (Internet access, telephone, and television) service, operating over a fiber-optic communications network, that is offered in some areas of the United States by Verizon Communications.
Split into simpler sentences: Verizon FiOS is a bundled Internet access, telephone, and television service which operates over a fiber-optic communications network. It is offered in some areas of the United States by Verizon Communications.