Final answer:
To achieve dramatically lighter hair, one should use High-lift color. It is the only option that can chemically lighten hair by removing its natural pigment.
Step-by-step explanation:
For dramatically lighter hair color, the appropriate choice would be b) High-lift color. Neither demi-permanent color, semi-permanent color, nor temporary color can significantly lighten hair as they do not contain strong enough chemicals to remove natural hair pigment. High-lift color includes a stronger developer or bleach, which effectively lightens hair by chemically altering and removing the natural pigment. It is important to note that the process of hair lightening is permanent and should be done with care, often best achieved with professional assistance.