What is the term that refers to the order of how objects are arranged in front and behind other objects on the artboard?

Notes about the current slide are entered into the ________

Fill in the blank(s) with correct word

A small business is currently using a paper-based system for billing, which is slow and error-prone.  Which system upgrade will make the process faster and have fewer errors?

A. Manual entry of data into spreadsheet system B. Source data automation C. Scanning hand-written bills D. Enterprise resource planning system