Question

key△ volcanoeswhich question would be best to ask in order to determine the locations of gold depos○ which type of rock is most resistant to erosion?○ what other minerals make up rocks that contain gold?○ what percentage of earths crust is made of metamorphic rock?○ which layer of earth contains the highest concentration of gold?

Explanation:

Gold deposits often form in association with specific rock types that contain gold-bearing minerals. Identifying these associated minerals helps link volcanic/rock formations (like those shown on the map) to potential gold deposit locations. The other options do not directly connect to locating gold deposits: erosion resistance is unrelated, crust percentage of metamorphic rock does not target gold, and the highest gold concentration layer (core) is not accessible or relevant to surface/near-surface deposits.

Answer:

What other minerals make up rocks that contain gold?