What is the part of opera in which the orchestra introduces the main melody is called?

What is the term for a re-current musical section between various contrasting sections

Which of the following statements is not true? a. henry purcell was virtually unknown in his own time, but today is considered england’s most significant composer from the baroque era. b. purcell mastered all the musical forms of late seventeenth-century england, including church music, secular choral music, music for small groups of instruments, songs, and music for the stage. c. purcell’s music is filled with lively rhythms and a fresh melodic style that captures the spirit of english folk songs. d. dido, in virgil’s epic poem that purcell used as the basis for his opera dido and aeneas, was queen of carthage.

Which of the following is not included in a three movement classical composition?