[文法] growing vs by growing

[ambrosio (...)]

One way to produce more food is ___ stronger plants.

選項有 growing 跟 by growing，

請問這一題填哪一個。

我自己是偏向填growing->
Growing stronger plants is one way to produce more food.

By growing stronger plants is one way to produce more food?!

我感覺第一句比較順，請問我這樣想合理嗎，各位有不同的看法嗎，謝謝

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推 Brightsmile:個人語感認為最後一句比較順
推 salutyz:同樓上 填空我也會填by growing