Increase in 和 increasing 語意的差異

對於 increase in 和 increasing 語意的差異,我知道 increase in 是名詞而 increasing 是動詞主動形態,但我有些不確定這題的語意差別。 Q: A study of food resources in the North Pacific between 1989 ans 1996 revealed _____ sea surface temperatures during the same period. (A) that creatures of the seabed were suffering because food supplies were dwindling,... 顯示更多 對於 increase in 和 increasing 語意的差異,我知道 increase in 是名詞而 increasing 是動詞主動形態,但我有些不確定這題的語意差別。

Q: A study of food resources in the North Pacific between 1989 ans 1996 revealed _____ sea surface temperatures during the same period.

(A) that creatures of the seabed were suffering because food supplies were dwindling, possibly as a result of an increase in

(B) that creatures of the seabed were suffeing because of good supplies, which were dwindling possibly as a result of increasing

(C) creatures of the seabed were suffering because food supplies were dwindling, possibly resulting from increasing (此項被我修過非原題,為了討論方便)

1. 正確答案是A,語意我也大概知道,只就 increse 這個字的不同形態對此題的語意會造成什麼差異?

2. reveal that..., that 是否可省略?

3. increasing 是否有動名詞形態?

以上懇請高手回答!
更新: 果然是高手,回覆得簡潔明暸!非常感謝。

關於 increasing,當初老師講解時,直接挑明這不合語意,但也沒講清楚,應該也是改變句意的問題,不知對於這點您有什麼意見?
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