Final answer:
The harp is often considered a part-time fifth member of the orchestral strings due to its complementary sound and occasional use in symphony orchestras, which is true. Furthermore, the marble seated harp player figurine emphasizes the historical significance of the harp in music.
Step-by-step explanation:
The statement that the harp may be considered a 'part-time fifth member of the orchestral strings' is true. This is because, while the harp is not a string instrument in the same sense as the violin, viola, cello, and double bass, it can be used in symphony orchestras to add a unique and complementary sound to the string section. Its inclusion can vary depending on the piece being performed and the composer's intentions. For historical context, one can look at the marble seated harp player figurine, which showcases the long-standing cultural significance of the harp. This ancient artifact, carved from local marble and approximately 12 inches high, is a testament to the harp's musical role in history, representing the first known musician figurine.