An opera singer breaks a crystal glass with her voice. which best explains why this occurs

The frequency of the note is the same as the natural resonance of the crystal, causing their molecules to increase their amplitude of vibration as energy from sound is accepted. When that sound is accepted and the vibration is increased, the glass shatters.

I hope this helped!! Have a blessed day :))

100 pounds is 100 pounds no matter the object or item being weighed