The correct answer is B. Born on the country's territory.
Explanation
Ius soli is a legal expression that is currently used to express people's right to land, that is, the right to nationality, this refers to the fact that a person or individual acquires the nationality of the land where he/she is born. It differs from the lus sanguini that refers to the nationality acquired through the blood of the parents, that is, that the person born acquires the nationality of his parents. So, the correct answer is B. Born on the country's territory.