Concept:Evolution is the scientific idea that living species change over time through natural processes.
Explanation:The theory of evolution explains the diversity of life on Earth.
It states that species are not fixed; they change over many generations.
These changes occur through natural processes such as natural selection.
Natural selection acts on variations within a population.
Individuals with advantageous traits survive and reproduce more successfully.
Over time, these traits become more common in the population.
This gradual change can eventually lead to new species.
The idea is supported by evidence from fossils, anatomy, and genetics.
It is not about organisms trying to improve themselves during their lifetime.
It also does not require sudden dramatic changes or fixed creation.
Answer:C. The idea that species change over time through natural processes.