Which of the following is an illuminated object

The lightbulb, the fire, and the Sun all create light from some energy source.

The Moon doesn't create light.  The parts of it that the Sun shines on 
are visible, the parts of it that the Sun doesn't shine on are not visible.  

Just like a rock on the ground at night, the Moon must be illuminated 
by a flashlight in order to be seen.  The Sun is the flashlight.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.