make the pencil case a different size use a different material to make the pencil case make the pencil case from another piece of pine wood use a thicker piece of pine wood to make the pencil case
I gave my students this multiple choice question: Michael has a pencil case made of pine wood. The surface of the pencil case scratches and dents easily. He wants to make a new pencil case that will not scratch or dent easily. Which of the following should Michael do to make a new pencil case that will not scratch or dent easily?

Only one answer is correct among these 4 choices:
- make the pencil case a different size
- use a different material to make the pencil case
- make the pencil case from another piece of pine wood
- use a thicker piece of pine wood to make the pencil case

Could you tell me which one is correct?

use a different material to make the pencil case