What purpose does the illustration serve in the document? a. the welcome is only provided in the illustration. b. the program's name is represented in the illustration. c. the illustration the student to better understand the process. d. the illustration makes the document more colorful and holds the reader's interest.

I would need to see the document to better understand the question. It is most likely one of these two-- See explanations below.

C. If the illustration something that uses descriptive words, it "illustrating" the process so that the student can better understand it. This could also be a diagram or chart

D. If the illustration is a drawing or photograph, the answer is most likely D because it adds color and holds the reader's interest. It uses imagery

The illustration helps the student to better understand the process.

umm of course in fact ur getting your answer : )