Using particle accelerators, scientists often use to synthesize heavier elements.
a) gamma rays
b) alpha particles
c) beta particles

      To synthesize heavier elements scientists often use alpha particles in particle accelerators.

Hence the right option is B.

alpha particles

A) gamma rays

B) alpha particles  

C) beta particles

the volume increases

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.