A fasting blood glucose screening test is performed on a pregnant client. The results indicate that the blood glucose level is 140 mg/dL (8 mmol/L). The nurse should anticipate that which treatment measure would most likely be prescribed next for the mother. 1. An oral hypoglycemic agent. 2. A-hour glucose tolerance test. 3.Humulin N insulin on a daily basis. 4. A sliding-scale regular insulin doses.