Explanation:

To find the correct one word substitution for the given group of words we must check the meaning of the words given as options

1. painter - an artist who paints pictures.

2. artist -  a person who produces works in any of the arts that are primarily subject to aesthetic criteria.

3. calligrapher - a person who is skilled at the art of calligraphy ( producing beautiful writing, often with a special pen or brush)

4. cartoonist - an artist who draws cartoons.

Hence it is clear that option 3 is the correct answer.