 
<translate> Abu mai muhimmanci da zai taimaka mana mu amsa wannan tambayar shi ne: A lokacin sanyi na wannan shekarar, Gerry ya mutu farat ɗaya sanadiyyar ciwon ƙwaƙwalwa, kuma Holly ta fahimci cewa yana da muhimmanci a gare ta da kuma yadda jayayyarsu ba ta da muhimmanci. Saboda haka, amsar ita ce ciwon ƙwaƙwalwa. <eng> The important part for answering this question is: By winter that year, Gerry suddenly dies of a brain tumor, and Holly realizes how much he meant to her as well as how insignificant their arguments were.
Therefore, the answer is of a brain tumor. 