उत्तर : 2. "अस्थि-बन्ध (लिगामेण्ट्स) से"
व्याख्या :

Bones are fastened to other bones by long, fibrous straps called ligaments (pronounced: LIG-uh-mentz). Cartilage (pronounced: KAR-tul-ij), a flexible, rubbery substance in our joints, supports bones and protects them where they rub against each other.