However, the way we think about life's stages is shaped by society.
Answer: Sentence 2.
Explanation:
The paragraph that has been given above in the question talks about the different stages that come in the life of a human being. As he grows up, he goes through a different stage of life and every stage of life has different roles and responsibilities to be performed.
Like when you are a child, you have a completely different way of living your life as compared to the way of living your life when you grow up into an adult and have responsibilities on you.
