Which of the following options, rearrange the given sentences in a proper sequence to make a meaningful passage?
1. The concept of "survival of the fittest" is central to the theory of evolution, emphasizing that organisms best adapted to their environments are more likely to survive and reproduce.
2. One notable example of this process in action is the adaptation of the peppered moth in England during the industrial revolution.
3. This shift in the population of moths is a clear example of natural selection and how genetic traits can affect the survival of species in a changing environment.
4. As the environment changed due to industrial pollution, the darker-colored moths became more prevalent, as they were less visible to predators against the soot-covered trees.
5. Through the study of genetic traits in various species, scientists have identified key factors that contribute to the survival of species over long periods of time.

Correct option is B

Option (b) is the correct order of the given sentences.
· 5 provides a broad research context (study of genetic traits over time) → a suitable thematic entry.
· 1 narrows to the core evolutionary principle (“survival of the fittest”), defining the lens for the example.
· 2 introduces the classic case study (peppered moth during the Industrial Revolution).
· 4 explains the mechanism and environmental shift (pollution → darker moths survive better).
· 3 serves as the result/interpretation, using the anaphoric “This shift” to refer back to the change described in 4, explicitly naming natural selection.
· The sequence thus moves general science → key concept → example → causal details → conclusion, maintaining logical cohesion and proper referential links.