Answer:
b. A class of stock given in exchange for another class by the issuer to its existing stockholders without the issuer paying a commission.
Step-by-step explanation:
As in this exchange and issue of stock no new stocks are issued as there is no commission involved as already issued shares are transferred, to another shareholders holding shares.
This ensures that only shares which affect the existing voting rights as in number they increase or decrease the the current voting share, and that the number of shares increase or decrease, are not required to registration.