Final answer:
A fasting plasma glucose level higher than 125 mg/dL is likely from a diabetic patient.
Step-by-step explanation:
In order to test for diabetes mellitus, fasting plasma glucose levels are measured. A fasting plasma glucose level higher than 125 mg/dL is likely from a diabetic patient. Option C, which is 131 mg/dL, would be considered a likely plasma glucose level from a diabetic patient.