Here are the answers to your questions based on common knowledge about drawing materials:
Question 1: What are graphite sticks?
- Drawing medium made from melted and compressed graphite
Question 2: Which pencil makes the darkest line?
- 9B
Question 3: Which tool is best to use for blending?
- Tortillon
Question 4: Which pencil is best to create mid-tones?
- 2B
Question 5: Which pencil makes a nice, bold line?
- 4B
Feel free to ask if you have more questions or need further clarification!