Riddle: what do you have when you snap your fingers twice every second

when you snap your finger twice every second, you will have a rythm. Rhythm is a pattern of sound that is repeated over and over again over a prolonged period of time. As long as an object or activity is creating a sound and that sound form a pattern with a specific speed, it could be categorized as a rhythm

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

The correct choice is c