Answer:
Sheldon Glashow
Step-by-step explanation:
the interaction between electromagnetic force and weak nuclear force is also known as Electroweak interaction.
This interaction is was first discovered by Sheldon Glashow and in 1979 he was awarded by Noble prize for his theory.
As per his explanation if the temperature of universe is too high then the electromagnetic force and weak nuclear force will merge and give the interaction as Electroweak force.
So here the correct answer will be
Sheldon Glashow