Final answer:
A 30 volume hydrogen peroxide solution generally lifts hair by 3-4 levels, which is suitable for moderate lifting in the hair coloring process.
Step-by-step explanation:
The question asks about the lifting levels of hair using a 30 volume hydrogen peroxide solution. In the context of hair coloring, a 30 volume hydrogen peroxide solution, which is stronger than the 3% solution typically used as a disinfectant, is typically used to lighten hair. The term 'volume' in this context refers to the amount of oxygen gas that the peroxide can release; thus, '30 volume' is a measure of its strength for bleaching purposes.
The correct answer to this question is B) 3-4 levels. Generally, a 30 volume hydrogen peroxide solution is capable of lifting hair by 3-4 levels. This can vary depending on the starting hair color and its condition, but in the professional hair industry, 30 volume is often used for moderate lift.