<prompt> Thirst is activated bya Increased Angitension II levelb Extracellular hyperosmolarityc Increaed ANP levelsd Increased Renin levelsacdbcdabdab  <response>: When plasma osmolarity increases, the Osmoreceptors are activated which results in increased thirst. Similarly, when hypovolemia occurs, Renin-Angiotensin mechanism gets activated which causes increase in Angiotensin II that stimulates the satiety centre. 