<span>Indo-Aryan peoples are a diverse Indo-European-speaking ethnolinguistic group of speakers of Indo-Aryan languages. There are over one billion native speakers of Indo-Aryan languages, most of them native to South Asia, where they form the majority.</span>
I would say B) faith in one supreme but unknowable god
"Hakkō ichiu" - eight crown cords, one roof.
Basically =
"The world under 1 roof"