As of 2009, the largest and most widespread religion in the world was
a.
buddhism
b.
christianity
c.
hinduism
d.
islam

I think the correct answer from the choices listed above is option B. As of 2009, the largest and most widespread religion in the world was Christianity. Almost in all countries, Christianity is present so it should be the answer. Hope this answers the question. Have a nice day.

Step-by-step:

The first flip numbers will always add up to 1 so you do

1 - 2/7= 5/7

now it gets easy...

The second flip  head will be 2/7 because it is a biased dice and the second flip tail will be 5/7

This also applies for the bottom 2: 2/7 head, 5/7 tails

hope this helped :)