有請英文高手幫我修改這題選擇題的文法~翻譯軟體不要來~

Question

在張蔭桓的一生經歷當中，促成他改革思想的動力最可能來自他的 (1)山東北京的國內工作經驗 (2)出使美國期間的耳濡目染 (3)中日甲午戰爭的刺激。

In Chang Yin-huan’s life, which made him to reform the thought the power most possibly to come from his
(1) the Shantung Beijing's domestic work experience (2) He goes abroad on a diplomatic mission American period to be influenced by what one sees and hears (3) Sino-Japanese War’s stimulating.

Answer 1

In Chang Yin-huan's life, what made him  reform the thought most possibly came from:(1) his domestic working experience in Shantung and Beijing ,(2) what he saw and heard as an ambassador to the U.S. ,(3) the Sino-Japanese War as an incentive .