Final answer:
The correct verb form to complete the sentence 'His home in Ithaka' is 'is,' making the complete sentence: 'His home is in Ithaka.'
Step-by-step explanation:
The correct verb form to revise sentence 3 "His home in Ithaka" is "is". Therefore, the complete sentence should read, "His home is in Ithaka."
The verb "is" corresponds to the singular subject "home," which is why it is the correct choice among the options provided.