What is produced when iron-bearing silicate minerals in the desert landscape oxidize?

the darker-brown rocks and pale-colored soil of some deserts
the rust-colored stain that tints some desert rocks and soil
iron ore deposits
increased moisture

Question

What is produced when iron-bearing silicate minerals in the desert landscape oxidize?
 	
	the darker-brown rocks and pale-colored soil of some deserts
	the rust-colored stain that tints some desert rocks and soil
	iron ore deposits
	increased moisture

kyanthedoodle · Answer

Silicate materials get a rusty color when they oxidize.

mizuki · Answer

is this right ??

kyanthedoodle · Answer

What do you mean? And from what I've read, yes. Yes it is.

mizuki · Answer

i mean its not in the multiple choice

kyanthedoodle · Answer

It is though. B is basically what I was getting at.

mizuki · Answer

o ok now i get it thanks

kyanthedoodle · Answer

No probs.