Correct answer: A. Because it may include mediation, dialogue, humanitarian help, and development cooperation
Explanation: The UN’s peace role is multidimensional. Peace operations can involve monitoring ceasefires, protecting civilians, facilitating dialogue, mediating between parties, supporting elections and institutions, delivering humanitarian assistance, and helping societies recover through development cooperation. Therefore A is correct. Troops may provide security in some situations, but military deployment alone cannot resolve political grievances or rebuild trust. B, C, and D are factually invalid.