Potrzebuje krótkiego i treściwego opisu Włoskiej gospodarki do ważnej prezentacji. PLS daje naj

The name may be in importnce  to them

The answer is d., a mountain.

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.