The correct answer is A. Graph-
Explanation:
In language, a root word is a set of letters or syllables that cannot be reduced to a shorter one, because of this root words are the base for other words as prefixes and suffixes are added and the meaning of the different affixes or parts that are part of a word are combined. Additionally, as suffixes and affixes, most root words derive from other language and have a specific meaning. In the case or the root word "Graph-" this root word derives from Greek and means "to write" as in the case of the word biography that is a text or writing about life (bio-) or the word graphic that means concepts, ideas, and others expressed through writing. Therefore, the root word that means "to write" is Graph-.
