Answer:
The child that is next to the neighbour clockwise of the child in the first position.
Explanation:
If you pass cards anti-clockwise skipping each time the neighbour, in the first round you reach the neighbour clockwise of the first child with the 11th card; the second round is finished with card nr 21 that is received by the child next to the neighbour clockwise of the first child.
I think d is the correct answer
The Great Plains formed the western boundary of the Plains Native American cultural region.