Which sentence most clearly states a reason for the author’s claim?

1.“Gaming damages relationships by reducing communication between gamers and their family and friends.”
2.“A study at Brigham Young University examined the gaming habits of college students across the country.”
3.“As the amount of time spent gaming went up, the quality of relationships went down (Hadfield).”
4.“Gaming damages this foundation.”

“Gaming damages relationships by reducing communication between gamers and their family and friends.”