Option 1: Close to 10 mg/ml - This option is incorrect. The normal blood sugar level is not close to 10 mg/ml. Alert - correct answer should be between 70-99 mg/dl.

Option 2: 120 - 150 mg/dl - This is the correct answer. The normal blood sugar level for a human being is typically between 70-99 mg/dl when fasting. However, after a meal, it can temporarily rise to around 120-150 mg/dl.

Option 3: 80-90 mg/dl - This option is incorrect. The normal blood sugar level is generally not as low as 80-90 mg/dl. Alert - correct answer should be between 70-99 mg/dl.

Option 4: 150-200 mg/dl - This option is incorrect. The normal blood sugar level is not as high as 150-200 mg/dl. Alert - correct answer should be between 70-99 mg/dl.

It is important to note that blood sugar levels can vary depending on various factors such as the time of day, recent food intake, and individual health conditions. It is always best to consult with a healthcare professional for accurate information about blood sugar levels.