Question

how is a root word used to understand a text? it reveals the style of the writer. it alerts the reader that a technical term is being used. it gives the reader an understanding of the writers tone. it provides the foundation for a words meaning.

Explanation:

A root word is the core part of a word. It forms the base meaning from which other words are built by adding prefixes and suffixes. So it provides the foundation for a word's meaning.

Answer:

It provides the foundation for a word's meaning.