Which types of baryonic matter are most abundant in the universe select the two correct answers

A. Neutrons

B. Protons
C. Electrons
D. Quarks

A. Neutrons
B. Protons

To determine which types of baryonic matter are most abundant in the universe, we can look at the composition of the universe. Baryonic matter refers to matter made up of protons and neutrons, which are the building blocks of atoms. The most common elements in the universe are hydrogen (H) and helium (He), which are primarily composed of baryonic matter. Therefore, the two correct answers are:

1. Hydrogen (H)
2. Helium (He)

The two types of baryonic matter that are most abundant in the universe are hydrogen and helium.