Question

the four principles of natural selection are: overproduction of offspring, variation, adaptation, and ____________
descent with modification
differences
mutations
gene flow
rewatch skip

Explanation:

Darwin's theory of natural selection has four principles. Overproduction of offspring means more offspring are produced than can survive. Variation refers to differences among individuals. Adaptation is when traits help an organism survive. Descent with modification is also a key part as organisms inherit traits and change over generations. Differences is too vague. Mutations are a source of variation but not one of the four main principles. Gene flow is about movement of genes between populations, not a core principle of natural selection.

Answer:

descent with modification