Final answer:
A DSL modem indeed uses standard copper telephone wiring to provide high-speed internet access over existing telephone lines.
Step-by-step explanation:
The statement that a DSL modem uses standard copper telephone wiring is true. DSL technology operates over existing copper telephone lines to provide high-speed internet access. The use of these existing lines allows for a convenient and cost-effective way to upgrade from dial-up internet service without needing to install new infrastructure.