Explanation

This is the typical concentration in a healthy person during fasting.

The normal blood glucose level is about 80–100 mg/dL, which is roughly 0.08% of the blood by weight.

0.8% and 0.7%:

These are closer to the correct range but still slightly higher than what is typically considered normal. 

7.5%:

This is significantly higher than the normal range and would indicate a serious medical condition like diabetes.