Which factor contributed most to the emergence of new species according to Darwin's theory of evolution? A. Environmental changes create new species by forcing organisms to adapt rapidly. B. Inherited genetic variations lead to differences in survival, with those best adapted to their environment passing on their trails. C. The inheritance of acquired characteristics from parents leads to the emergence of new species. D. All species have a predetermined path of development, with new species emerging in fixed intervals.

## Step 1<br />The question is asking us to identify the factor that most significantly contributes to the emergence of new species according to Darwin's theory of evolution. <br /><br />## Step 2<br />Charles Darwin's theory of evolution, also known as the theory of natural selection, is based on the idea that species evolve over time through a process of natural selection. This process involves the survival and reproduction of individuals with traits that are best suited to their environment.<br /><br />## Step 3<br />Looking at the options, option B states that inherited genetic variations lead to differences in survival, with those best adapted to their environment passing on their traits. This statement aligns with Darwin's theory of natural selection, which emphasizes the role of inherited genetic variations and the survival of the fittest.