The type of rural settlement is determined by various factors, and it is often influenced by a combination of characteristics. In the options provided:

(4) Built-up Area and Inter-house distance

Both the built-up area (which includes the structures and buildings in the settlement) and the inter-house distance (the distance between individual houses or structures) are important factors in determining the type of rural settlement. Different types of rural settlements may have varying patterns of built-up areas and different spatial arrangements of houses, which contribute to their overall classification.