Question

As an essential element in living organisms, ? ion is playing important role in insulin secretion, release of neurotransmitters, muscles contraction and heartbeat regulation.
A. Na
B. K
C. Ca
D. Cl

Right answer is C.

I have already written the right answer so Don't write wrong answer. Just rewrite the right answer and make ur answer brainliest.
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Answer 1

answer = c.ca

this is answer

Answer 2

Answer:

Hey buddy the correct answer is ( C ) Ca .

Explanation:

Thanks buddy