The sentence that best supports the idea that athletes are appreciative of the services that emotional support animals provide is:
"Remington has become a shoulder to lean on if I'm anxious or nervous," UNC soccer player Madi Pry told Sports Illustrated. "He makes me feel O.K. being vulnerable with the people that are around me."
This sentence highlights the emotional comfort and support that the athlete receives from the emotional support animal, demonstrating appreciation for its presence during stressful times.