Staements I: In alpha decay of different radioactive nuclides, the energy of alpha particles has been compared. It is found that as the energy of alpha particle increases the half-life of the decay goes on decreasing.
Staements II: More is the energy in any decay process, more is the probability of decaying the nuclide which leads to faster rate of decay.

Answer

a

Explanation

Staement II is correctly explaining Staement I. More than probability of decay means faster decay process and hence shorter half-life.