Why did Sophie choose her son in Sophie's Choice?

In "Sophie's Choice," Sophie is faced with an agonizing decision in a Nazi concentration camp, where she must choose which of her two children will be sent to their deaths. This choice is driven by her desperate desire to save at least one child, reflecting the profound tragedy of her situation. The decision is ultimately a heart-wrenching testament to a mother's love and the unbearable moral dilemmas faced during the Holocaust. Sophie's choice haunts her throughout her life, encapsulating the themes of guilt and trauma.