Rearrange the following sentences to form a coherent paragraph:
This process, a cornerstone of evolution, ensures that only individuals best suited to their environment survive to reproduce.
The diversity of life on Earth is the result of a gradual process of change over vast spans of time.
This leads to the gradual accumulation of favorable traits within a population.
It begins with inherited variation among individuals, where some possess characteristics that give them an advantage over others.

Correct option is C

Option (c) 2, 4, 3, 1 is the correct order of the given sentences.
Explanation (why this order is correct):
• 2 is the best opening because it introduces the broad idea: biodiversity comes from long-term evolutionary change.
• 4 follows because “It begins…” explains the starting mechanism (inherited variation), clearly referring back to the gradual process.
• 3 comes next because “This leads…” logically explains the result of variation—accumulation of favourable traits.
• 1 fits as the conclusion by naming “This process” (natural selection) and describing its role in survival and reproduction, completing the explanation of evolution.