The correct answer is stabilizing rays.
This is not a ray, this is a phenomenon of stabilizing things. There is no ray by the name of stabilizing rays.
Gamma radiation mainly consists of photons, which lacks mass and charge.
Alpha particles are helium particles having two protons and two neutrons. They have charge and mass.
Beta rays are composed of high energy electrons. They have high penetrating power than alpha particles but they have less penetrating power as compared to gamma particles.