1. A neutron has a neutral charge because:

a- it is composed of positive quarks and negative electrons

b- it is composed of an equal number of protons and electrons

c- it is composed of an equal number of positive and negative electrons

d- it contains a specific combination of quarks

d- it contains a specific combination of quarks. Neutrons are made up of three quarks: two down quarks and one up quark, which results in a neutral charge.