Which of These Statements Refers to Osmolarity

Multiple Choice

Which of these statements refers to osmolarity

A) A hypertonic solution has a higher concentration of solutes and a lower concentration of H₂Oa. than an isotonic solution.
B) When the body becomes dehydrated (H₂Oa. deficit) , urinary output increases as a compensatory measure.
C) Vasopressin secretion is decreased when a deficit of water develops in the body.
D) Diabetes insipidus often leads to hypotonicity of the body fluids.