Question

question 5 of 10
how does a block of data on a blockchain get locked?
it gets double-checked by the people with access to the public ledger.
the goverment reviews and verifies all blocks of data.
financial institutions review all blocks of data related to cryptocurrency.
blocks of data are locked since they are unalterable.

Explanation:

Blockchain is a decentralized public ledger. Data blocks are locked (validated) via consensus from network participants (those with access to the public ledger) through processes like double-checking transactions. Government or financial institution oversight is not part of decentralized blockchain locking, and "unalterable" is a result of being locked, not the method of locking.

Answer:

A. It gets double-checked by the people with access to the public ledger.