Walt Whitman was born May 31, 1819.
If you read each of these, or speak them, there is only one that suits the sentence correctly.
Go with the third one. Couldn't seems to fit pretty well there.
Chapter 9 tells us that Mrs. Johansen has brought Annemarie, Kirsti and Ellen to stay at her brother's (Henrik) house for a few days. In previous chapters, we find out that Ellen comes to stay with the Johansen's for her own safety. She is to act as the third daughter of the house. When the German soldiers demand evidence that Ellen is actually a Johansen,...