Answer:
Its D DLSR and Mirrorless
Explanation:
Tell me if you get it wrong or right :3
A professor who publishes world population research in a journal
Step 1.
Purchase Requlsition
Step 2.
Requisition Review
Step 3.
Solicibation process
Step 4.
C'valuation and process
Step 5.
Order Management
Step 6.
Involve approvals and disputes
Step 7.
Record Keeping
Explanation:
Hope it help