Final answer:
Wi-Fi is the network that will allow you to connect your cellular-enabled tablet without incurring additional data costs.
Step-by-step explanation:
The correct answer is a. Wi-Fi. Wi-Fi is a network that allows you to connect your cellular-enabled tablet to the internet without incurring additional data costs. When you connect your tablet to a Wi-Fi network, it uses the internet connection provided by that network instead of using your cellular data. This can be particularly useful when you are in an area with Wi-Fi access, such as your home, school, or a public place like a coffee shop.