单项选择题

This year, my husband Doug and I celebrated the 25th birthday of a man we had never met. His name was Tonny Horn. On the night of October 21, 2005, when he was standing in a parking lot (停车场) talking to friends, Tonny jumped to the top of a car, as he had done a hundred times before. This time, though, Tonny lost his balance (平衡). His head struck the ground, hard.
All night, Elizabeth, Tonny’s mother, stood next to her son, who was lying in a hospital bed. She remembered that Tonny has once mentioned organ (器官) donation (捐献). Maybe I can spare another family this pain, she thought. When the time came, she and her husband Tom signed the forms permitting his organs to be taken out.
Tonny was declared dead the next day. Twenty-four hours later, in a Boston hospital, Tonny’s liver (肝脏) was made part of my husband, Doug, who was suffering from a hopeless liver disease.
Months later, we learned the Tonny’s parents wished to meet someone who had gained life through the gift from their son. A meeting was arranged by the organ bank to bring together the two families.
The meeting was risky, but worth it. We learned for the first time how Tonny had lived and died. We learned something about Tom and Elizabeth too. For the Homes, seeing Doug and knowing he was well seemed to ease (减轻) their suffering. I’ll never forget seeing Doug’s tall figure stooped (弯腰) over Elizabeth, her arms around his waist, as a mother would hug (拥抱) a son. We learn from the passage that Tonny died ______.