When the Laws of War are broken (breached) there are simple and grave breachs depending on the severity of the violation. Which of the following is a grave breach?

Grave breaches of the Laws of War typically include actions such as willful killing, torture, inhumane treatment, and extensive destruction of property not justified by military necessity. These violations are considered serious offenses under international law, particularly within the framework of the Geneva Conventions. Such acts not only violate the rights of individuals but also undermine the principles of humanitarian law and can lead to prosecution for war crimes.