It would be completely false to say that the height of an object above sea level is its relief. The correct option among the two options given in the question is the second option.
Height of an object above sea level is mostly referred to as altitude. It is also sometimes referred to as elevation. This is very helpful in terms of geographical calculations.
The fact that US citizens have a high per capita income (per capita = per person) allows them to consume a disproportionately large amount of products compared to the rest of the world. So I think the answer is B.
