Question

what is the central idea in the section \the early days\?
even though computers were connected through arpanet, there was still much work to be done to transfer data at higher speeds.
even though computer experts could communicate with each other through arpanet, they could not interact with their broader social circles.
there is not a specific date for when social media started, but the creation of arpanet introduced technology that first connected people electronically.
there might be debate among experts about the origin of social media, but most everyday computer users consider arpanet their first connection to social media.

Explanation:

The central idea of "The Early Days" section focuses on the limitation of early electronic communication via ARPANET: it only allowed computer experts to connect with one another, excluding their wider social networks, which aligns with the selected option.

Answer:

Even though computer experts could communicate with each other through ARPANET, they could not interact with their broader social circles.