Within hair-texture classification systems, what does "type 4" describe?
a.Coily or kinky hair with very tight zig-zag or spring-like pattern
b.Curly hair with a defined spiral
c.Straight hair with no curl pattern
d.Wavy hair with a loose S pattern
Explanation
Common hair-typing systems describe type 1 as straight, type 2 as wavy, type 3 as curly, and type 4 as coily or kinky with a tight zig-zag, spring, or Z-pattern. Each type has subcategories (a/b/c) reflecting tightness. Texture (strand diameter) is separate from wave pattern.
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