> 彼の落ち着いた態度 **に** 私の恐怖心は消えた。  
>  My fear disappeared thanks to his relaxed disposition. (given translation
> by duolingo)

The usage of に is confusing me in this sentence. I would be happy with 態度のために
or 態度のおかげで, but に on its own is not something I've seen used like this before.

Is this good grammar? Is it maybe more/less formal than the other two options?
In what situations should I use に like this?
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2022-05-22T10:14:41.190
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2022-05-22T10:14:41.190
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question
grammar particle-に
Particle に used to express reason/cause