Final answer:
Resonance occurs when vibrations traveling through an object match the object's natural frequency, causing it to vibrate with maximum amplitude.
Step-by-step explanation:
The correct option is d. resonance. When vibrations traveling through an object match the object's natural frequency, it results in resonance. Resonance occurs when an external force or system drives a vibrating object at its natural frequency, causing the object to vibrate with maximum amplitude. This phenomenon can be observed in various everyday examples, such as a singer shattering a glass with their voice or a swinging pendulum gradually increasing its amplitude.