Which locations have the smallest difference in elevation?
location elevation (m)
st. peter's square, vatican city state 33
laguna salada, mexico –10
chott melrhir, algeria −40
dniester, moldova 2
a.
st. peter's square, vatican city state and dniester, moldova
b.
laguna salada, mexico and chott melrhir, algeria
c.
laguna salada, mexico and dniester, moldova
d.
st. peter's square, vatican city state and laguna salada, mexico