What is the solution to the equation g(x)=3?

Answer:
3 ≤ x < 5
Step-by-step explanation:
The top horizontal line segment on the graph corresponds to g(x) = 3. That segment extends over the interval from 3 to 5, including 3, but not including 5. So ...
g(x) = 3 for 3 ≤ x < 5 . . . . matches the last choice