The principal book of account where accounts are classified and summarized is

Answer Details

The principal book of account where accounts are classified and summarized is the ledger. A ledger is a book or a system of records used to classify, record, and summarize accounting transactions. It contains separate accounts for each asset, liability, revenue, and expense item. The ledger is where all the information from the journal entries is collected and organized into specific accounts. It serves as the primary book of accounts and is used to create financial statements such as the balance sheet and income statement. Therefore, the ledger is a crucial part of the accounting system and is used to provide an accurate financial picture of a company's operations.