To answer this question, you need to understand the concept of POS, which stands for Point Of Sales. Let's go through each option to understand why it is correct or incorrect:
Option A) Personal Operating system - This option is incorrect because POS stands for Point Of Sales, not Personal Operating System.
Option B) Ping On Top - This option is incorrect because POS stands for Point Of Sales, not Ping On Top.
Option C) Point Of Sales - This option is correct because POS stands for Point Of Sales.
Option D) Put In Open - This option is incorrect because POS stands for Point Of Sales, not Put In Open.
The correct answer is C. Point Of Sales. This option is correct because POS is commonly used to refer to the Point Of Sales system, which is used in retail and wholesale businesses to track sales, inventory, and manage customer transactions.