Match List I with List II:

List I (GIS Analysis Function)		List II (GIS Operations)
(A)	Combining detailed map categories to create new, less detailed categories	(I)	Buffering
(B)	Creates a zone of specified with around one or more feature	(II)	Network Analysis
(C)	permits determining the stream flows in a drainage basin	(III)	Intervisibility
(D)	Permits viewshed mapping of what terrain features can be seen from a specified location	(IV)	Aggregation

Choose the correct answer from the options given below:

Correct option is A

1. A. Combining map categories fits with IV. Aggregation, which combines detailed categories into broader ones.
2. B. Creating a zone around features fits with I. Buffering, which generates a zone of specified width.
3. C. Determining stream flows fits with II. Network Analysis, which analyzes connectivity and flows, such as water in a basin.
4. D. Viewshed mapping fits with III. Intervisibility, which maps visible features from a given location.

Information Booster: 

1. Aggregation (IV):
   Aggregation combines detailed map categories into broader, less detailed ones. It is commonly used to simplify data for general analysis or summarization at higher levels, such as regional or national scales.
   

2. Buffering (I):
   Buffering creates a zone of specified width around one or more features, useful for proximity analysis. It helps in identifying the area of influence around features, like flood zones or noise pollution areas.
   

3. Network Analysis (II):
   Network analysis is used to study flow and connectivity in networks, such as transportation or water systems. It helps in finding optimal paths and analyzing the flow of materials or information through a network.
   

4. Intervisibility (III):
   Intervisibility determines which terrain features are visible from a specific location, aiding in viewshed mapping. It’s applied in urban planning, telecommunications, and environmental studies.