C. The number of protons and neutrons.
Regent's Park, is trying to communicate the SCALE of the exotic animal by comparing it to the nine onlookers behind it. A scale is a unit used in mathematics.
<h3>What is a scale?</h3>
Scale is a characteristic of an object that does not change when it is multiplied by a given unit, thereby showing universality.
The units of scale in mathematics and physics include, among others, length and energy.
The value that is multiplied in a given scale is called 'common factor' and it is used to show universality.
Learn more about scales here:
brainly.com/question/25324744
tissue culture is the growth in an artificial medium of cells derived from living tissue. sorry if wrong. i suck at biology.