Final answer:
The fundamental duality in the field of geography comprises Location and Movement. So, the correct answer is option a.
Step-by-step explanation:
The fundamental duality in the field of geography comprises Location and Movement. Location refers to the position of a place on the Earth's surface, either in absolute terms (latitude and longitude) or in relative terms (in relation to other places). Movement, on the other hand, refers to the flow and transportation of people, goods, and ideas between different locations.
For example, when studying geography, you might analyze the location of a city in terms of its latitude and longitude, while also examining the movement of goods through transportation networks such as roads, railways, or shipping routes. So, the correct answer is option a.