The correct option is A Volume of urine increases
Low levels of the anti-diuretic hormone (ADH) will cause the kidneys to excrete too much water. Urine volume will increase leading to dehydration and a fall in blood pressure. ADH is required for the absorption of water by the kidneys; in its absence, the kidneys will not reabsorb water and the water is lost in the form of urine, so the volume of urine increases. Low levels of the anti-diuretic hormone may indicate damage to the hypothalamus or pituitary gland or primary polydipsia (compulsive or excessive water drinking). Thus, the correct answer is option A.