Multiple choice general knowledge science & technology GSM Global System for Mobile Communities Global Syscom for Mobile Communication Global System for Mobile Communication Global System for Mobile Community Reveal answer Fill a bubble to check yourself C Correct answer Explanation GSM stands for Global System for Mobile Communication, a standard for mobile phones and networks. Option C is correct. Options A, B, and D are incorrect - 'Global Syscom' and 'Mobile Communities/Community' are not the correct expansion.