Correct option is A
Option (a) is the correct order of the given sentences.
· Sentence S sets the context by stating that environmental degradation is ongoing.
· Sentence P introduces the idea of the need to protect and preserve the environment.
· Sentence Q connects the need for protection by mentioning the importance of creating awareness among people.
· Sentence R explains one of the main causes of environmental degradation, which is rapid deforestation.
The correct order (SPQR) creates a coherent and meaningful paragraph by first addressing the issue (S), then highlighting the need (P), explaining how to address the issue (Q), and finally providing one of the reasons for the problem (R).