The correct answer is A. Android and iOS
Step-by-step explanation:
In technology, an operating system is a software or program that manages the applications, storage, and processws of a technological device such as a cellphone, tablet or computer, making possible the device works. Additionally, there are multiple operating systems available and some are preferred over others. In the case of tablets, the most common systems are Android and iOS. These are the most common because these two operating systems are designed for mobile devices such as cellphones or tablets while others such as Windows or macOS are designed for computers.