(c) Enhanced Connectivity
Digital technology improves communication and information sharing across the world, enabling enhanced connectivity — the main benefit of its role in globalization.
Source: Factors that have enabled Globalisation — Technology, Chapter 4
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The passage clearly states that developments in ICT (telecommunications, computers, Internet) allow people to "contact one another around the world" and "access information instantly." This directly points to Enhanced Connectivity as the key benefit. The other options contradict the passage: costs decreased, access expanded, and transaction speed increased — not the opposite.