i hope the answer for the question u asked is option a.
here is my view about the question...
comparing the given step response with the step response of second order system for underdamped case.....
we will get the values of damping ratio,undamped natural frequency.
By substituting these values in the standard form of closed loop transfer function of second order system we will get the required closed loop transfer function.
i am sorry if the answer is wrong.i hope this is the answer.