This just in: Brown has won.
Pastoral nomads are known to depend on domesticated
livestock, thus being called herders.
They also migrate in an established place to find lands to be used for
pastor, concluding that they move from place to place.
So the answer is number 2, herders, and 3, move from place
to place.
You could look for a topography map or you could find a book or some websites on the landscape of Vietnam.
I believe it’s C. Recycling
I think it would be
6+6+8+8 bc 6x8=48 if that makes sense
so the answer would be 28 m
or 12+12+4+4 bc 12x4=48
so the answer is 32 m
it really depends on how you break 48 up
have a blessed day!