Which option shows the meaning 'letter, writing'?

• A. Proto
• B. Thesis
• C. Aster
• D. Graph

Answer: (D)

Understanding word parts that mean writing helps decode meanings like this. The root graph comes from Greek graphein, which means to write. When you see writing-related meanings, graph is the part of the word that signals that idea, as in autograph (a written signature) or a graphic (a written or drawn representation). So a term that signifies “letter, writing” is best matched by graph.

The other roots point to different ideas: proto means first, thesis is a statement or position, and aster relates to stars (as in asteroid or asterisk). Those don’t convey writing, so they don’t fit as well.