A distinctive feature of quarks is that they
A) are always observed singly, since they do not readily interact with other particles.
B) have zero charge.
C) have zero rest mass.
D) have fractional electric charge.

Question

Quizplus · Accepted Answer

Quarks have fractional electric charges, such as +2/3 or -1/3, which is a distinctive feature compared to other particles like protons and electrons that have whole number charges.

A Distinctive Feature of Quarks Is That They