The answer is OH.
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Answer:
Use either a vinegar, Borax, or bleach solution in a spray bottle to tackle the mold. Simply spray the solution on showers, baths, basins, tiles, grout, or caulking. Then use either a cleaning cloth or a toothbrush to remove the slime
Chemical bonds are broken to supply us with energy. Without bonds, and our ability to break them, the food we eat would not supply us with energy.
Given that,
The equation is : 
To find,
The missing coefficients.
Solution,

Let the value of ? is x.
It is the equation of photosynthesis.
In LHS,
Carbon atoms = 6
Hydrogen atom = 12
Oxygen atom = 18
In RHS,
Carbon atoms = 6
Hydrogen atom = 12
Oxygen atom = 6
If we make the equation as 
No the number of atoms in RHS = 6+ 12 = 18
It means if we take the value of ? as 6 the equation will be balanced.
Hence, the correct option is (B) "6".
The chemical properties of an organic compound are governed by the functional groups present in that compound. The different types of functional groups are ketones, amines, alcohols, esters and carboxylic acids.
The formulas of some functional groups





Therefore, amines contain nitrogen atoms bound to one, two, or three carbons.