Choice "C" is correct. "The entity holds or controls the rights to assets" and "liabilities are obligations of the entity" are management assertions that relate to the rights and obligation assertion about account balances at period end. Choice "a" is incorrect. Transactions and events that have been recorded have occurred and pertain to the entity are statements that relate to the existence and occurrence assertion about transactions and events.Choice "d" is incorrect. The statement "transactions and events have been recorded in the proper accounts" relates to the understandability and classification assertion about transactions and events.Choice "b" is incorrect. Amounts and other data related to transactions and events have been recorded appropriately is a statement that relates to the valuation, allocation and accuracy assertion about transactions and events.