An organism which multiple species have evolved from is known as a... A Common ancestor.
B Relative.
C Kingdom.
D Class.

Common ancestor

Explanation:

Relative is like a sibling, not related to species

Kingdom is WAY above species (Animalia)

Class is like type of species (I think)

Common ancestor is when various types of the original evolve from something

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).