Answer:
Political Science
Step-by-step explanation:
History, as a field of study deals with the historical events in political, social, economical dimension.
Analyzing the options one after the other
1. Geology deals with the study of the earth and its composition (rocks, mountains, etc)
2. Geometry is a field in mathematics
3. Architecture deals with construction of buildings and other structures
4. Political Science deals with the study of past and present events via politics
Comparing the above definitions, we can conclude that the field of study closely related to History is Political Science.