Question

An eighth-note symbol is constructed using a note head a ______ and a flag

Answer 1

A note head, a stem and a flag 

Answer 2

An eighth-note symbol is constructed using a note head, a steam and a flag. See attached picture below for the construction of an eighth-note. The first is the head or the round part of the note, followed by a stem or the vertical line attached to the note head, then last is the note flag.