The glands of the endocrine system from your list are:
- Pineal gland - This is an endocrine gland that produces melatonin and regulates sleep-wake cycles.
The liver is not primarily an endocrine gland; it has multiple functions, including metabolic regulation and detoxification.
The "appendices" seems to be a misnomer; there is no known endocrine structure referred to as appendices.
The term "renal gland" is likely referring to the adrenal glands, which sit on top of the kidneys and are part of the endocrine system, producing hormones like adrenaline. However, if it specifically refers to kidneys, then kidneys are not endocrine glands.
So, the main correct answer from your list is the Pineal gland. If "renal gland" is meant to imply "adrenal gland," then that could also be considered correct.