What is realpolitik? the concept that political decisions of foreign engagement have to be based on the best interests of all parties concerned the concept that political decisions have to be made by consensus or new alliances should be sought out the concept that political decision about foreign engagement have to be based on preserving the interests of your country above all the concept that a single country, acting alone, has the most realistic chance of meeting its own needs

The correct answer is:

The concept that political decision about foreign engagement have to be based on preserving the interests of your country above all.

The concept Realpolitik refers to developing political activities based on practical and material determinants rather than on theoretical or ethical goals.

Realpolitik appeared in mid-19th century Europe from the contact of the ideas of Enlightenment with state organization and power politics.

In international relations, the concept of political realism refers to the understanding that states seek their interests by practicing Realpolitik.

pretty sure a is right