Final answer:
The actual instruments used in Lili Boulanger's Psalm 24 are not specified in the available resources. It usually includes a full orchestra with instruments such as the flute, trumpet, violin, and potentially the piano and harp, amongst others.
Step-by-step explanation:
The correct answer to the question of which musical instruments are found in Boulanger's Psalm 24 is not provided in the information available. Nevertheless, Lili Boulanger's Psalm 24 typically features a variety of orchestral instruments rather than just one or two instruments, and typically includes strings, woodwinds, brass, and percussion, which may include some of the instruments listed in the possible answers. In orchestral music, the flute and trumpet are common orchestral instruments, the piano is often used for accompaniment, while the harp adds distinctive plucked string sounds. Instruments like the violin and trombone are widely used in orchestras as well. Clarinets and saxophones are woodwind instruments, yet the saxophone is less common in standard classical compositions and not typically part of traditional symphony orchestra instrumentation.