Question

Why do some minerals have to undergo smelting?(1 point)
Responses

to break rock down into usable sand
to break rock down into usable sand

to process them into usable mineral fuels
to process them into usable mineral fuels

to melt down ores and extract metals
to melt down ores and extract metals

to reduce their toxicity

Answer 1

The correct response is:

**to melt down ores and extract metals**.

Smelting is a process used to extract metals from their ores by applying heat and a reducing agent, which allows for the conversion of the ore into its metallic form.