Answer:
What He meant was the theory of natural selection which was proposed by Him.
Explanation:
What Charles Darwin meant was theory of natural selection which is that populations or organisms develop phenotypic traits or characteristics or organisms have variable traits which help them to survive, adapt, reproduce and well suited to their environmental changes and passing these traits to generations and not about been strong. What He meant was that only organisms that have traits that can help them to respond to changes in their environment and make them survive. This is a survival differential mechanism.
