Question

By scholarly convention, prehistory refers to the period

Answer 1

By scholarly convention, prehistory refers to the period "C) before the invention of writing," since before humans invented writing, the only way to study them accurately is through archeology and paleontology. 

Answer 2

$\huge\mathfrak {Answer}$

By scholars convention, prehistory refers to the period before the invention of writing.

hence the correct option is

option C.

Thanks