Final answer:
A fasting glucose level between 100-125 mg/dL indicates prediabetes.
Step-by-step explanation:
Prediabetes is a condition where blood glucose levels are higher than normal, but not high enough to be considered diabetes. According to the reference information provided, a fasting glucose level between 100-125 mg/dL indicates prediabetes. This means that option c) 100-125 mg/dL is the correct answer choice for the question.