Final answer:
The given sentence 'Momi read the novel in one day.' can be rewritten in the passive voice as 'The novel was read by Momi in one day.'
Step-by-step explanation:
The given sentence: 'Momi read the novel in one day.' can be rewritten in the passive voice as: 'The novel was read by Momi in one day.'
In this sentence, the subject 'Momi' becomes the object 'the novel' in the passive voice. The verb 'read' changes to 'was read' to match the passive voice. The phrase 'in one day' remains the same.
Therefore, option a) 'The novel was read by Momi in one day.' is the correct passive form of the given sentence.