A 'suffix' refers to a particular letter cluster that is added at the end of the word, which ends up causing a change in the meaning of the root word. Here, the root is 'imagin', and the correct answer is Option B) - Imaginatively. It is is an adverb and fits grammatically into the sentence. It modifies the verb 'converted'. Option A) would form 'Imaginative' which is an adjective; Option C) would form 'Imaginary which is also an adjective, and lastly Option D) would form 'Imagination' which is a noun. Thus, only Option B) is correct.