According to the given information,
1) Dyna is taller than Ray.
Dyna>Ray 2) Paul is taller than Dyna.
Paul>Dyna 3) Ray is taller than Harry.
Ray>Harry 4) Sam is taller than Paul.
Sam>Paul By combining all the given information, we get the final arrangement:
Sam>Paul>Dyna>Ray>Harry
According to above arrangement,
Second Smallest student is
Ray.
Hence,
Ray is the correct answer