Final answer:
Acid-balanced perms are recommended for fine and color-treated hair, as this type of hair is more sensitive and can be damaged by stronger perm solutions (Option B).
Step-by-step explanation:
Fine hair tends to be more vulnerable to damage from the perm process and color-treated hair may have gone through additional chemical processes that weaken the hair shaft. An acid-balanced perm has a lower pH level than alkaline perms and is therefore gentler on the hair, minimizing potential damage while still achieving the desired curl.
It's important to choose the right perm solution to avoid further damage to hair that is already fine or chemically treated. For coarse and resistant hair types, a stronger solution might be needed, while naturally curly or chemically damaged hair might not be suitable candidates for perm treatments due to the risk of exacerbating hair damage or not achieving the expected results. Hence, B is the correct option.