Shearing sheep to make wool is an example of a - chemical change - physical change

Shearing sheep to make wool is an example of a physical change.

In physical changes, the matter changes its form; that is, at one point the object could be restored to its original matter or state. In this case, shearing the sheep only makes them lose their fur, which will grow back in due time.

The shearing process is done all around the year which mainly depends on the requirement of wool and climate. Mainly, the ewes are not shorn during winter if it is in the lambing stage. When the winter is severe, the sheep are shorn with cover combs which leaves greater amount of wool on the animal to protect it. Sometimes, if the young sheep are shorn, it is left in the shed to protect it from chill condition.

a and b because with the other three, they simplify to something else.