Question

ancient humans discovered a naturally-occurring magnetic rock called ______. choose one option a lodestone b loudstone c magicite d mysterite

Explanation:

Lodestone is a naturally - occurring magnetic rock (a form of magnetite, \(Fe_3O_4\)) that was discovered by ancient humans. "Loudstone" is not a term related to magnetic rocks. "Magictite" and "mystertite" are not valid scientific terms for natural magnetic rocks. So the correct option is A.

Answer:

A. lodestone