Answer:
Option 3
Step-by-step explanation:
Parathyroid hormone directs serum calcium through its impacts on kidney, bone and the digestive tract.
In bones, Parathyroid hormone upgrades the arrival of calcium from the enormous repository contained during the bones.
Bone resorption is the typical obliteration of bone by osteoclasts, which are in a roundabout way invigorated by Parathyroid hormone.