Which of the following two operating systems are used most frequently on tablets? select one: a. android and ios b. blackberry and windows c. windows and ios d. windows and android

The correct answer is A. Android and iOS

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.

i was actually wondering the same thing but i've tried and i don't think you can. i think once you set it up then that's what it stays as. sorry ; -;

you can not change you age soon as you signed up. the only way is too delete your account and use another account to sign up and put your correct age.