Answer :
Final answer:
According to Manuel Castells, a set of interconnected nodes is a network, essential for understanding complex systems in biology and human social structures. The correct option is C.
Explanation:
According to Manuel Castells, a set of interconnected nodes is a network. This concept is fundamental in understanding how various systems operate, from biological entities to large-scale human social structures. For instance, the internet represents a complex network of interconnected computers and servers, while social networks are structures that exist between actors, whether individuals or organizations, linked through a variety of associations.