Why is this sentence passive?


> これには砂糖が含まれていますか

I don't see a reason for this to be passive. Isn't it just asking if a
grammatical subject is performing an action? I don't see that anything is
being done to the subject marked with が.

Shouldn't

> これには砂糖が含んでいますか

work just fine?

If they're equally valid, what's the difference in meaning/nuance?

**Edit** : DeepL and Google give an identical translation for both: "Does this
contain sugar?" My question is why would that require passive?




> これには砂糖が含まれていますか。

含まれ(る) here is passive. It literally means "In this, is sugar contained?"

> これには砂糖が含んでいますか。

is incorrect. You could instead say:

> これは砂糖を含んでいますか。

which literally means "Does this contain sugar?"

