What is the tempo marking typically used for the first movement of a sonata in Sonata Allegro form?

The correct tempo marking for the first movement of a sonata in Sonata Allegro form is typically "Allegro." This tempo indication suggests a lively and brisk pace, which aligns with the character of many sonata movements. The Sonata Allegro form is characterized by its dynamic contrasts and development, making an energetic tempo like Allegro ideal for establishing the thematic material and showcasing the composer's creative ideas. Additionally, most classical sonatas follow this convention, reflecting the vibrancy and excitement intended for the opening movement.

Other tempos like Andante, Vivace, or Lento may serve specific purposes in other contexts or movements but do not encapsulate the standard approach for the first movement in this form as effectively as Allegro does.