The correct option is C Guru ji's welcome of Prince Khusrau
The martyrdom of Fifth Sikh Guru Arjan Dev was the result of many factors working at Tandem with each other. The elder brother of Guru Pirthi Chand was angry with the guru as he thought that it was his right to be the guru. Another reason was the popularity of Guru Arjan Dev as a worldly religious leaders among Hindus and Muslims so the emperor had a fear. But the immediate cause of his martyrdom was, he helped rebel Prince Khusrau. The emperor was provoked since the guru had offered help monetary as well as provided shelter to the fugitive son of the emperor.