Group System Mobile
Global Special Meaning
Group Special Mobile
Global Special Mobile
Answer is Wrong!
Answer is Right!
The correct answer is: D. Global Special Mobile
GSM (Global System for Mobile) was earlier also known as Global Special Mobile. It is a standard for digital cellular networks that was developed in Europe in the 1980s. GSM is the most widely used mobile phone standard in the world, with over 5 billion subscribers.
The other options are incorrect. Option A, Group System Mobile, is not a valid acronym. Option B, Global Special Meaning, is not a meaningful phrase. Option C, Group Special Mobile, is not a valid acronym and is not a meaningful phrase.