The correct options are
A To safeguard the interests of people.
B To bring improvement in the country’s economy.
C To protect the borders of the country.
The foreign policy of a country shapes its relationship with other nations, blocs and the country's approach towards international relations. It also aims to safeguard and promote the well-being of it's people. It contributes towards the protection of the country's borders and helps in the improvement of its economy.