Answer:
Correct answer is Kosovo, United Kingdom, and Italy
.
Explanation:
The easiest way to conclude this was through religious structure. Among the mentioned nations, Kosovo is the only country where Muslims are majority. When you also take into account that it is undeveloped country, where most people are engaged in the agriculture, the answer is obvious.
Claims are also supported when we see that most of inhabitants of GB are Protestants, and most inhabitants of Italy are Catholics.
