Answer:
I believe it is only C.
Explanation:
"Kushti is the sacred girdle worn by Zoroastrians around their waists."
Please forgive me if I am wrong, but I hope this helps.
The only other thing I can thing of is a Tekhelet in Judaism but it is oftenly hung from things, not wore around their waists.
Best time is probably in the morning or evening.
Usually the sun is at its hottest mid-day, but if you go in the evening it is still quite hot but not as much
Idk what you are saying to me rn