The correct answer is option 1. Key Points The given sentence is in Active voice. We need to follow these instructions while changing the voice of an assertive sentence. Write the 'Object' of Active voice in place of ‘Subject ’ in Passive voice. Use the auxiliary verb according to the number, person, and tense of the passive subject. Always use the Verb -3 form (Past Participle) in Passive voice. Use the ‘by’ preposition before the object in Passive voice. Write the 'Subject' of Active voice in place of ‘Object’ in Passive voice. In the given sentence "Harry" is the subject & "his college project work" is the object which will be interchanged in a passive voice. If the sentence in active voice is written in future simple tense, then it changes in the passive voice as follows- Future simple - Will is changed to → Will be Following the above steps, Option 1 is correct because "by tomorrow evening" has been used as the prepositional phrase, which is a preposition used to express time. Option 3 is wrong because "The college project work" is written & it is given as "his college project work". Pronouns are never changed while writing the sentence in Passive voice. Option 4 is wrong because "will get finished" is written. New words are never added while changing a sentence to passive voice. The correct sentence: By tomorrow evening his college project work will be possibly finished by Harry.