Concept:The special term for mating in sheep is an important piece of livestock reproduction vocabulary.
Explanation:In sheep husbandry, mating is specifically called tupping.
The ram is sometimes referred to as a tup, and the act of mating is therefore termed tupping.
Sheep are not said to tread, court, or service during mating in standard agricultural usage.
Answer:The process of mating in sheep is termed tupping.
Therefore, the correct option is C. tupping.