Answer: Sales tickets
Telephone bill
invoice from supplier
Bank statement
Explanation:
A source document is a document whereby the details regarding a business transaction are written. The vital information regarding a transaction like the date, amount paid, names of the persons involved etc are all written in a source document.
The following are the source documents from the question:
• Sales tickets: It serves as a sales revenue evidence
• Telephone bill: This is a bill for the telephone expense that have been incurred.
• Invoice from supplier: This is a purchase evidence thar certain good has been bought and supplied.
• Bank statement: It is an evidence that a transaction has occured between the bank and the party involved.
Other options are non source documents.