Answer:
Embedded Operating System
Explanation:
An embedded operating system is a specialized operating system dedicated to perform a unique task for a digital device other than your desktop or laptop. For example, we can find this operating system appears in a washing machine to enable user to control the operation of the washing machine. This type of operating system is designed to be more resource efficient. An embedded operating system can also found in cars, digital television, ATM machine, digital camera etc.
I can't tell you the answer without a picture, but to find the answer yourself: Go straight up from the cell containing 'Activity Questions' this will tell you a letter such as B. Go directly across to the left of the cell containing 'Activity Questions' this will tell you a number such as 3. The name of the cell I used as an example would be called B3.
The software that has no restrictions from copyright holder regarding modification of the software's internal and its redistribution is called an Open source software. They are being provided for use and redistribution for free, with no cost. They can be easily downloaded on the Internet.