I think you should read it yourself
At the most basic level, the active voice emphasizes the person or agent who performs an action, in short, the “actor.” The passive voice emphasizes the recipient of the action or sometimes the action itself.
So if you think about the connotations of the words, veils conceal things, sifting implies a kind of search, so I'd say the answer is C. a ghostly, mysterious mood.
Answer:
I feel good and happy while doing my activity and I think a learn a lot of new things.
Explanation:
Because it why I feel