I don't think you've copied your question accurately but the answer is 30 metres/second. That gives the velocity of the object which can move at a speed of 30 metres per second or 108 kph.
Which of the following is a measure of velocity? Question 2 options: 30 seconds 30 South 30 meters/second 30 meters/second, South
Velocity is a vector quantity which has both magnitude and direction,it has unit m/sec so the answer is 30 m/s south.Hope this helps.