Final answer:
Within an orchestra, the cello section is a part of the larger string section. When orchestras tune, woodwind instruments might play high frequencies, with stringed instruments playing lower frequencies. Standing waves in a guitar occur in the guitar string and the air inside it.
Step-by-step explanation:
The subsection of an orchestra that the cello section is a part of is the string section. In an orchestra, the string section includes a variety of instruments such as violins, violas, cellos, and double basses. The cello section is a specific group within this larger family of string instruments.
When all members of an orchestra begin tuning their instruments, different sections tune to different notes tailored to their instruments. For instance, some woodwind instruments may play high-frequency notes, while stringed instruments typically play notes of a lower frequency that resonate well with their size and structure.
In the scenario where a musician plucks a string on an acoustic guitar standing in a field, standing waves will most likely occur in a) The guitar string and b) The air inside the guitar. These are the media where the wave can oscillate and resonate.