Answer: B

Parity bits are used to check for completeness of data transmissions. Choice A is incorrect because check digits are a control check for accuracy. Choice C is incorrect because in one-for-one checking, individual documents are matched to a detailed listing of documents processed by the computer, but do not ensure that all documents have been received for processing. Choice D (prerecorded input) is a data file control for which selected information fields are preprinted on blank input forms to reduce the chance of input errors.   _{Your Comment}