Respuesta :

Answer: Report labels

Explanation: Column heading in the report specifies about the table or query and is enclosed in the quotes .If the column heading is not present then it is considered as the variable labels. Report labels are used for labeling a captioning in the table,content or account.

Other options are incorrect because they are used for the captioning or describing about the source, texts group of the entities. Thus the correct option is report labels.