Multiple choice general knowledge What is ISIN? Internal Securities Identification Number International Securities Identification Name International Securities Identification Number International Secure Identification Number Reveal answer Fill a bubble to check yourself C Correct answer Explanation ISIN stands for International Securities Identification Number, which is a unique code for identifying securities. Option A incorrectly uses 'Internal', Option B uses 'Name' instead of 'Number', and Option D uses 'Secure' instead of 'Securities'.