Answer: If it makes him loose his place in the team
Step-by-step explanation:
Seth's decision on sugar-laden drinks is about to affect his place in the team. His decision is a really big effect to the team considering the fact that most sportsmen take sugar-laden drinks as it's been recognized that it gives energy to the body. If Seth insist on his choice it would affect the mindset of his teammates hence they begin to see sugar-laden drinks bad. In order to prevent this knowledge from spreading Seth would be threatened based on his belief and would probably drop it so he remains on the team.