A bond put provision grants the bondholder the:

right to contact each bondholder to determine if he or she would like to extend the term of his or her bonds

option to exchange the bonds for equity securities.

right force the corporation to repurchase the bonds from bondholders prior to maturity

right to repurchase the bonds on the open market prior to maturity.

option of repurchasing the bonds prior to maturity at a prespecified price.