Two lawyers have donated $ 50, 000 to our school’s campaign “Help the Needy”, which was s

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A. approve
B. advocate
C. guarantee
(答案→)D. sponsor
解析：句意为：两位律师已经捐献了50000美元以赞助我们学校“帮助贫困人口”的运动，这是十年前由我们的前任校长创办的。approve vt 批准，赞成；advocate vt 提倡，主张；guarantee vt 担保，保证；sponsor vt赞助，发起。故答案应为D。