A nurse is reinforcing education for the parents of a client with hypothyroidism who has been prescribed levothyroxine (Synthroid). The nurse should reinforce the ongoing need for which of the following monitoring or screenings?

A. Frequent assessments of blood glucose levels. While hypothyroidism can affect metabolism, levothyroxine does not typically require frequent blood glucose monitoring unless the client has diabetes or another metabolic condition. B. Routine monitoring of thyroid-stimulating hormone (TSH) levels. TSH is the primary indicator used to assess whether levothyroxine dosage is effective. Routine TSH monitoring ensures that thyroid hormone levels remain within the target range, preventing complications such as under-treatment (persistent hypothyroid symptoms) or over-treatment (hyperthyroid symptoms like palpitations and weight loss). C. Regular monitoring of blood pressure. While thyroid dysfunction can affect blood pressure, routine BP monitoring is not the primary focus of hypothyroidism management unless the client has additional risk factors for hypertension. D. Continuous monitoring of body temperature. Hypothyroidism can cause cold intolerance, but continuous body temperature monitoring is not necessary unless the client is at risk for severe hypothyroidism complications such as myxedema coma.