b is not correct because he repairs in more than a neighbor's home.The exoression is plural so the correct answer is neighbors' to express more than a neighbor's home
B can't be correct because, neighbor's = neighbor is. The sentence wouldn't make sense if it said, "George does extensive repairs in his neighbor is homes."
A has to be correct because neighbors' = neighbors. The sentence basically stays the same.`
Thanks to a project called After Dark which uses robots to broadcast gallery tours via a web feed, people from around the world <em>have </em>the opportunity to visit London's Tate Britain art gallery from the comfort of their homes.
