What Three Things Do A Comprehensive Stock Control System Ensure?

I'm doing a retail course and can't find the answer to this last.question ...need help

"Stock control" in a warehouse system? There is no "stock control" in finance. You've posted in the Investing section.

In order to get help with your homework, you should first show your work, what terms you've defined, and what it is you don't understand.

Homework section is here:

https://answers.yahoo.com/dir/index?sid=...

What Three Things Do A Comprehensive Stock Control System Ensure?

I'm doing a retail course and can't find the answer to this last.question ...need help