Which of the following is NOT a treatment option for hyperthyroidism?

Levothyroxine is not a treatment option for hyperthyroidism because it is a synthetic form of the thyroid hormone thyroxine (T4), which is typically used to treat hypothyroidism, a condition characterized by low thyroid hormone levels. In contrast, hyperthyroidism involves excessive production of thyroid hormones. Treatment options for hyperthyroidism aim to reduce the levels of these hormones or block their effects, which is why options like radioactive iodine ablation and antithyroid medications such as methimazole and propylthiouracil are appropriate. These treatments specifically target the overactive thyroid gland to help restore normal hormone levels. Thus, levothyroxine would not be suitable for managing hyperthyroid patients.