What happened to the quarks that existed freely during the particle era?
A)They combined in groups to make protons,neutrons,and their antiparticles.
B)They froze out of the soup of particles at the end of the era.
C)They evaporated.
D)They combined in groups to make electrons and neutrinos.
E)They combined in groups to make W and Z bosons.

Question

Quizplus · Accepted Answer

During the particle era, quarks existed freely in an extremely hot, dense and energetic soup. As the universe expanded and cooled, the quarks combined in groups of two or three to make protons, neutrons, and their antiparticles. This is known as hadronization or hadron synthesis.

What Happened to the Quarks That Existed Freely During the Particle