Cna someone tecah me how to do this step by step and give another example?

How would i answer this for an exam?

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

Can someone answer all these questions i need it done by tonight. once again