In these two different passages from the book “The Metamorphosis” by Kafka, we can see a shift from Greta’s attitude towards her brother at the beginning and at the end of the story. At the beginning, Greta is willing to help his brother Gregorio when is he is transformed in an insect. But at the end, Greta starts working to support her family and she does not longer care about her brother and proposes to let Gregorio die. So option C) “Grete is growing irritated and disgusted by her brother” is correct.