The question is from Periodic Motion chapter, passage 4, question 24.

It states "suppose the mass is pulled a small distance to the right of the equilibrium position and then released when t = 0. Which graph best represents velocity vs time?

The answers all include a sinusoidal wave on an x, y axis where v is on the y axis and t is on the x axis.

Based on the question, I assumed that at time = 0, the mass is at max displacement to the right so the graph should be the following:

It states "suppose the mass is pulled a small distance to the right of the equilibrium position and then released when t = 0. Which graph best represents velocity vs time?

The answers all include a sinusoidal wave on an x, y axis where v is on the y axis and t is on the x axis.

Based on the question, I assumed that at time = 0, the mass is at max displacement to the right so the graph should be the following: