The following sentences belong to a coherent introductory paragraph of an essay. Match the sentences to the correct descriptive elements.

1. In an era where knowledge and skills are essential for personal and societal development, understanding the factors that influence academic achievement is increasingly important.

2. This essay will explore the key factors affecting students' academic performance.

3. "Academic performance is a critical indicator of a student’s progress and success within the educational system" (Chunga, 2021, p. 43).

4. Factor affecting academic performance include socio-economic status, learning environments, and individual motivation.