Which of the following words is formed by the process of suffixation from the root 'CREATE'?

C. CREATION

What is the root word in the word 'unhappiness'?

A. HAPPY

Identify the word that can be formed by adding a prefix to the root word 'ACT'.

A. REACT

Which of the following is NOT a valid word formed from the root 'FORM'?

D. DEFORMITY

Which of the following words is an example of a compound word formed from 'BOOK' and 'MARK'?

A. BOOKMARK