The correct option is
B Humane
Let's examine the sentence: "Akbar was a _____ ruler." The sentence talks about Akbar as a certain type of ruler. The type of ruler is to be filled in the blank and the two choices given are 'Human' and 'Humane.' The adjective 'Human' refers to anything related to a characteristics of a person or a human being. The adjective 'Humane' refers to showing compassion and benevolence. Now, the adjective 'Human' cannot be used with 'ruler' as it is understood that only a human being or person can be a ruler. So, the adjective 'Humane' is the right choice for 'ruler' as it describes the qualities of the ruler. So, Option B is the correct answer.