I have this sentence: "Kaieteur Falls, which/that is 741 feet tall, is located in Guyana. My English teacher told me "that" would be correct. However, I strongly believe "which" would be correct. Could someone explain which one is correct?
Also, I am aware of threads such as that vs which vs what or others, and I have looked through those. I am fairly certain that "which" would be correct by reading these threads, but my English teacher thinks different.