Answer:
Record and consolidate all financial transactions.
Explanation:
A ledger is a book that contains a record of all the transactions made- be it credit or withdrawals/ expenses. It is a book that maintains a record of any form of transaction that was ever done by a person or company.
It can also be a computer folder where the same record is made. The main point of maintaining a ledger is to keep track of, record, and also "make" solid evidence or proof of the transactions ever done. Thus, the function of a ledger is to record and consolidate all financial transactions ever done.