Question

vibrations send waves into the air. our brains intereperet this as
rhythm
sound
music notes
strings
what is the term used to describe the lowest pitch of an instrument?
bass
low key
foundation
fundamental

Explanation:

1. Vibrations in the air create sound - waves that our brains interpret as sound. Rhythm is about pattern in time, music - notes are a symbolic representation in music, and strings are parts of some musical instruments.
2. The fundamental frequency represents the lowest pitch of an instrument. Bass can refer to a type of instrument or a low - frequency range, low key is more related to tonality in music, and foundation is a more general term not specific to musical pitch.

Answer:

1. B. sound
2. D. fundamental