Complete with your internet search the following table with the seven magnitudes
basic units, their units and their symbol
Magnitude
Unit
Symbol

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.