What is the balanced chemical equation of Magnesium burns in presence of air?

Oxidation and oxide generation happens when any substance is burnt in the presence of ambient oxygen. The same thing occurs when burning magnesium in oxygen-rich air; during this process, magnesium oxidizes and magnesium oxide is produced. The reactions that result in the creation of oxides are referred to as oxidation reactions.
Explosive dangers include magnesium alloys and pure magnesium. They appear to be very combustible when they are unadulterated.
When working with magnesium powder, safety glasses should be used since burning magnesium emits white light that contains UV radiation that can harm the eyes. Magnesium burns easily in the air when it is in its metal form. However, a certain quantity of energy is needed to start the reaction. The metal receives this energy from the flame.
Magnesium oxide is created when magnesium ribbon burns in oxygen, emitting a brilliant bright light. After burning, magnesium oxide turns into a white powder. Magnesium burns by an exothermic mechanism. When there is a net release of energy, the process is exothermic. Similar to this, magnesium's reaction with oxygen generates heat, which results in an exothermic process.
Magnesium is oxidized to produce the white powder known as magnesium oxide when it surrenders two electrons to oxygen atoms.

The balanced equation is:

$2\mathrm{Mg}\left(\mathrm{s}\right) + {\mathrm{O}}_2\left(\mathrm{g}\right) \to 2\mathrm{MgO}\left(\mathrm{s}\right)$

Hence, the correct answer is C.