这道题选B
这道题应该考的是 award 与reward 的辨析.
首先,award 为及物动词 vt.意思是：
1.授予,给予[(+to)][O1]
Phil was awarded the top prize.
菲尔获得头奖.
2.判给[(+to)][O1]
The judge awarded him $1000 as damages.
法官判给他损害赔偿金一千元.
其次,reward 为及物动词
意思为：1.报答,报偿;酬谢;奖励[(+with/for)][O1]
Winners will be rewarded a trip to England.
优胜者将获得去英国旅游的奖赏.
2.报应;惩罚(坏人或坏事)[(+for)]
He will sooner or later be rewarded for his wicked conduct.
他的恶行迟早会受到报应.
所以此句应该翻译为：最终,他得到了他一直以来渴望的作为奖励.
句式为：be reward with 报答,报偿;酬谢;奖励
以上仅为个人见解 如有不对请见谅.