The best answer here would be pencil.
Artists use pencil to make sketches and create studies. They then use these sketches and studies to create their final larger piece. They use pencil because it's quick, can be corrected, lightweight and easy to use. Before pencils artists would make charcoal drawings but once we had pencils it made sense to use them as they aren't messy like charcoal.
Answer:
A technique in which two or more vanishing points are used on a flat surface to create the illusion of depth.
Explanation:
In broad terms, the writing process has three main parts: pre-writing, composing, and post-writing. These three parts can be further divided into 5 steps: (1) Planning; (2) Gathering/Organizing; (3) Composing/Drafting; (4) Revising/editing; and (5) Pro ofreading.