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

D. ACTUALITY

From the root 'SCRIBE', which of the following is a valid derivative?

B. SUBSCRIBE

Which of the following words can be formed by rearranging the letters of 'LISTEN'?

A. SILENT

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