Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

D. Quarks pair with other quarks to form protons and neutrons.

Explanation:

Quarks are one of the types of fundamental particles: in particular, they are the particles that form hadrons (consisting of 3 quarks) and mesons (consisting of 2 quarks).

Protons and neutrons are hadrons, so they consist of 3 quarks each: therefore, this statement:

D. Quarks pair with other quarks to form protons and neutrons.

is the correct one.

The other statements are wrong because:

A --> protons and neutrons do not contain leptons (leptons are other fundamental particles, such as the electron and the muon)

B --> bosons at the mediators of the fundamental forces, and they do not consist of quarks. Photon is one of the bosons.

C --> protons and neutrons do not contain photons

E --> protons do not contain electrons

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )