Final Answer:
Fragilitis crinium is the technical name for split ends (option 3).
Step-by-step explanation:
"Fragilitis crinium" refers to a hair condition and, specifically, denotes split ends. Split ends occur when the protective outer layer of the hair cuticle becomes damaged, leading to the splitting or fraying of the hair shaft. This condition is often caused by various factors, including heat styling, chemical treatments, and environmental stressors. "Matting," "alopecia," and "ringed hair" refer to different hair conditions or disorders. Matting is the tangling and clumping of hair, alopecia is hair loss, and ringed hair involves hair that appears banded or ring-like.
In conclusion, the correct answer is 3) split ends, as "fragilitis crinium" specifically describes the condition of hair exhibiting split ends due to damage to the hair cuticle.