Insufficient parathyroid hormone production in the body could result in

Insufficient parathyroid hormone production in the body could result in low levels of calcium in the blood which can cause cramping and twitching of muscles or involuntary muscle contraction in hands and feet, dry skin and several other symptoms in the body.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

The answer to this is b