Choose the best option to replace the underlined part to improve the given sentence.
If no substitution is required, select 'No substitution.'
This paper is made up of wood.
Show answer & explanation
Correct answer: C
Explanation
Phrase 'made of' is used when the original material is still visible or recognizable in the final product (e.g., 'table is made of wood').
Phrase 'made from' is used when the material has undergone a chemical or physical transformation and is no longer recognizable (e.g., 'paper is made from wood').