Which of the following describes a proton?

the positively charged central core of an atom
a particle that is composed of one up quark and two down quarks
any particle that is composed of three quarks
a particle that is composed of two up quarks and one down quark

1 answer

A proton is best described by the statement: "a particle that is composed of two up quarks and one down quark." This describes the quark composition of a proton, which gives it a positive charge.