Which of the following is involved in the processing of wool?

The wool production process consists of several steps, including shearing, scouring, grading and sorting, dyeing, drying, and yarn production. Shearing involves removing the fleece from a sheep using either a manual razor or blade. The fleece then undergoes scouring to properly wash and clean it, removing any dust and dirt.
Grading and sorting take place next, during which the fleece is categorised based on its colour, texture, length, and other factors. 
Afterward, the yarns are straightened, combed, and dyed in various hues. Finally, the dyed yarns are rolled into usable yarn.