I think the yellow arrows show a guide were it goes or maybe tissue fluids!
Explanation:
Thyroid disease occurs when the thyroid (a small, butterfly-shaped gland in the front of your neck) does not produce the right amount of thyroid hormone. These hormones control how your body uses energy.
C) the lungs.
The air moves down the trachea and into the lungs where it is picked up by the blood
D acceleration is the answer
