The social graph era was marked by chronological algorithms.

• A. False
• B. It was marked by engagement algorithms
• C. True
• D. Only at the start

Answer: (C)

In this era, the focus was on who you’re connected to—the social graph—and how fresh the updates were. Feeds were shown in reverse chronological order, so the most recent posts from your connections appeared first. That time-based sequence is what “chronological” refers to here, before platforms started ranking content by predicted engagement signals. As platforms grew, they shifted to engagement-driven algorithms to decide what to show, but the social graph era itself was defined by this simple, time-ordered presentation. So the statement is true. The other options describe what came later (engagement algorithms) or are too narrow or inaccurate about the timeline.