Answer:
A) spatial order
Step-by-step explanation:
Spatial order refers to a method of organization of a composition in which details are presented as they are located in space. This means that the details are positioned in a geographical structure based on the perspective from which the readers observe these details. In this case, spatial order would be particularly useful to the author because he wants to examine terrain. In order to analyze the effects of terrain in a famous battle, the author will have to describe the terrain in a geographical and systematic way.