A night-shift worker experiences extreme difficulty falling asleep due to being exposed to bright lights during both night and day.

The unusual pattern of light exposure is disturbing which controls the release of the hormone:

Kidneys are not part of the lymphatic system.

The lymphatic system is a network of vessels and organs that drain excess fluid from the tissues, transport fats and immune cells, and protect the body from infections.

Kidneys are part of the urinary system, which filters blood, regulates fluid and electrolyte balance, and produces urine.

Choice A is wrong because kidneys do not have a direct connection to the lymphatic system.

Although kidneys have lymphatic vessels in their cortex, they do not originate from the lymphatic system.

Kidneys receive blood from the renal arteries and return it to the renal veins.

The lymphatic vessels in the kidney cortex drain interstitial fluid and immune cells from the kidney tissue to the regional lymph nodes.

Some additional sentences are:

Choice B is right because kidneys are part of the urinary system, not the lymphatic system.

The urinary system and the lymphatic system have different functions and structures in the body.

Normal ranges for kidney function tests include blood urea nitrogen (BUN) of 7 to 20 mg/dL, serum creatinine of 0.6 to 1.2 mg/dL, and glomerular filtration rate (GFR) of more than 90 mL/min/1.73 m.

Normal ranges for lymphatic system tests include white blood cell (WBC) count of 4,000 to 11,000 cells per microliter, lymphocyte count of 1,000 to 4,800 cells per microliter, and immunoglobulin levels of IgG (700 to 1,600 mg/dL), IgA (70 to 400 mg/dL), IgM (40 to 230

mg/dL), IgE (0 to 100 IU/mL), and IgD (0.5 to 5 mg/dL).

This is because it is an example of a positive feedback loop, which amplifies the change and moves the system away from its normal state.
A negative feedback loop is a mechanism that reverses a deviation from the set point and maintains homeostasis.
Choice A is wrong because increasing heart rate and force of contraction when blood pressure falls is a negative feedback loop that restores blood pressure to normal.
Choice B is wrong because secreting insulin after a meal to return blood sugar concentration toward normal is a negative feedback loop that regulates glucose levels.
Choice D is wrong because shivering when body temperature falls below normal is a negative feedback loop that increases heat production and raises body temperature.
Normal ranges for blood pressure are 90/60 mmHg to 120/80 mmHg, for blood glucose, are 70 mg/dL to 140 mg/dL, and for body temperature are 36.5°C to 37.5°C or 97.7°F to 99.5°F.