Final answer:
Wind instruments such as the flute, clarinet, and saxophone are used to double the soprano, alto, and tenor voices in movement 1.
Step-by-step explanation:
The instruments that double the soprano, alto, and tenor voices in movement 1 are wind instruments. Wind instruments, such as the flute, clarinet, and saxophone, are used to double these vocal parts in a composition. These instruments use resonance in air columns to amplify the tones made by the vocalists, adding depth and volume to their voices.