The correct option is:
(B), (C) and (D) only
Explanation:
- (B) Adrenaline: An animal hormone secreted by the adrenal glands that prepares the body for the "fight or flight" response during stressful situations.
- (C) Thyroxine: An animal hormone secreted by the thyroid gland that regulates metabolism, heart rate, and growth.
- (D) Oestrogen: A primary female sex hormone in animals responsible for the development and regulation of the female reproductive system and secondary sex characteristics.
Why Auxin is excluded:
- (A) Auxin is a plant hormone (phytohormone) that plays a crucial role in regulating plant growth, cell elongation, and phototropism.