What material makes up earth's outer core?

a. peridotite
b. a liquid iron-nickel alloy
c. a solid iron-nickel alloy
d. basalt

The material that makes up earths outer core is solid iron and nickel
source: wonderopolis.com
hope this helps :]

C. the innercore however is liquid due to pressure and temperature.
some crust however may have basalt or granite.

Can you give me little more information

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.