The hormone thyroxine is commonly known as-

Correct option is B

The correct answer is (b) T4.
· Thyroxine, also known as T4, is a hormone produced by the thyroid gland.
· It plays a crucial role in regulating metabolism, heart function, digestive function, muscle control, brain development, and bone maintenance.
Additional Knowledge:
· T3: Incorrect, T3 refers to triiodothyronine, another thyroid hormone, but not thyroxine.
· PTH: Incorrect, PTH stands for parathyroid hormone, which regulates calcium levels in the blood.
· TSH: Incorrect, TSH is thyroid-stimulating hormone, which regulates the production of thyroid hormones but is not thyroxine itself.