Introduction:
In this question, we are asked to identify which among the given options is not a mobile operating system. We need to provide a detailed explanation of the correct answer.

Explanation:
The correct answer is option 'B' which is Safari.

Safari:
Safari is not a mobile operating system, but rather a web browser developed by Apple Inc. It is primarily used on Apple devices such as iPhones, iPads, and Mac computers. Safari is known for its fast browsing speed and advanced features, but it is not an operating system itself.

Other options:
Let's briefly discuss the other options to understand why they are mobile operating systems.

Bada:
Bada is a mobile operating system developed by Samsung Electronics. It was initially designed for feature phones but later expanded to smartphones as well. Bada provides a user-friendly interface, supports various applications, and has been used in Samsung devices.

Symbian:
Symbian is a mobile operating system developed by Nokia and later maintained by Accenture. It was once one of the most popular operating systems for smartphones. Symbian offered a wide range of features, such as multitasking, customization options, and support for third-party applications.

MeeGo:
MeeGo is a Linux-based mobile operating system that was a collaborative effort between Intel and Nokia. It was designed to be used on smartphones, tablets, and other embedded devices. However, MeeGo did not gain much popularity and was eventually merged with another operating system called Tizen.

WebOS:
WebOS is a mobile operating system developed by Palm, Inc. (later acquired by HP) and is now owned by LG Electronics. It was initially used in Palm smartphones and later evolved to be used in HP tablets and LG smart TVs. WebOS is known for its intuitive user interface and support for multitasking.

Conclusion:
In conclusion, among the given options, Safari is not a mobile operating system. It is a web browser developed by Apple Inc. The other options, Bada, Symbian, MeeGo, and WebOS, are all mobile operating systems used in various devices.