The second one is correct because it still says both ideas correctly but also puts them together to make a less confusing sentence.
Answer:
social comparison
Explanation:The theory of social comparison claims that people assess their own social and personal worth on the basis of how they stack up against others. Often people compare to others as a way to foster self-improvement, self-motivation, and a positive self-image.
Your answer is gonna be line 8 paragraph 2
