The correct option is B Abyssinia
The league of Nation had two main aims. First, collective security, the members of the league will act together if one state attacked another. Second, to encourage international cooperation in the economic and social sector. Many challenges occurred during this period and in almost all cases League of Nation failed to deliver. Such as the invasion of Abyssinia by Italy in 1935: Only halfhearted sanctions were imposed that too were abandoned after few weeks.