Answer: <u>Option 4; Oxygen gains electrons and hydrogen to form water.
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Respiration is a process where glucose is used and energy is released stored in this molecule. Oxygen is used during respiration as well and it gains the electrons and hydrogen to form water. And, gain of electrons is an oxidation reaction. So answer is option 4.
Since, oxygen is consumed during respiration, option 1 is incorrect.
Loss of electrons is reduction, so option 2 is also incorrect.
Glucose is used in respiration, thus option 3 is incorrect.
Answer:
Hello, There! Thanks for asking your Question.. Your answer is below
B. melting point Is The most Correct Answer
Explanation:
The Melting point is the temperature at which a solid is converted to a liquid.
Therefore, making your Answer option B.
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