The correct sequence forms the sentence: ”The growing importance of social rights for children can be seen as an extension of citizenship, starting with the Factory Acts of the 1840s which protected children from unrestricted exploitation at work.” Thus, the correct answer is option 4.
• (C): Introduces the subject matter.
• (B): Provides historical context.
• (D): Specifies who is being protected.
• (A): Concludes with a general statement about the relationship.