Final answer:
A musical form where a statement is answered by another voice is called a 'canon', which became popular during the Renaissance following the madrigal. The canon involves successive voices echoing the same melody to create a layered musical texture.
Step-by-step explanation:
A musical form style where a statement is answered by another voice is known as a canon. In the context of the Renaissance era, canons rose to prominence after the popularity of the madrigal form. The madrigal was a secular genre that often featured the two higher voices in canon over a sustained instrumental accompaniment. The structure of a canon involves the initial voice starting off with a melody, followed by the second voice that enters after a set time interval with the same melody, thus creating a seamless, echoing effect.
When considering the options provided: 1) Canon, 2) Fugue, 3) Sonata, 4) Symphony; Canon is the correct answer as it directly refers to the musical form where a statement (melody) is imitated and answered by the subsequent voice(s).