Simplify the following text for a Grade 13 native English-speaking person.
Original: Ian opted to quit the challenge , conceding immunity to Tom , after Tom played on his remorse for hurting Katie 's feelings and breaking his promises to her , and Ian felt that dropping out would make up for the emotional damage he had done .
Simplified: Ian chose to quit the challenge , giving immunity to Tom , after Tom played on his regret for hurting Katie 's feelings and breaking his promises to her , and Ian felt that dropping out would make up for the emotional damage he had done .