Darwin's theory was known as the theory of:​

A) ​natural selection
B) ​natural variation
C) ​animal evolution
D) ​circumnavigation

Natural Selection

a process by which evolutionary changes occur in species, where individuals with traits better suited to their environment are more likely to survive and reproduce.

Darwin's Theory

A scientific theory of biological evolution that explains how species evolve over time through the process of natural selection, survival of the fittest, and genetic variations.

Animal Evolution

The gradual development and diversification of animals over millions of years, guided by natural selection, adaptation, and genetic variation.