How does Blockchain contribute to enhancing cybersecurity ?

Blockchain enhances cybersecurity primarily by ensuring the transparency and immutability of transaction records. In a blockchain network, data is stored across multiple nodes in a distributed ledger where each block contains cryptographic hashes of the previous one. This structure makes it computationally infeasible to alter past records without detection, thereby preventing unauthorized tampering and ensuring data integrity. While encryption is used within blockchain systems (Option B), it is not the primary mechanism for cybersecurity enhancement in this context. Option A is incorrect because blockchain operates on decentralization, not centralized control. Similarly, Option D is false as blockchain does not reduce the need for multi-factor authentication; security layers remain essential. Thus, the core contribution lies in creating a tamper-proof and transparent audit trail that bolsters trust and security.