Which instrument is featured in both the kangaroo and elephant sections of "Carnival of the Animals"?

The piano is indeed the instrument featured in both the kangaroo and elephant sections of "Carnival of the Animals" by Camille Saint-Saëns. In this suite, the piano plays a critical role in providing both rhythmic and melodic support, adeptly conveying the characteristics associated with each animal.

In the kangaroo section, the piano's lively, hopping rhythms mimic the energetic movement of the kangaroo, enhancing the playful atmosphere. In contrast, in the elephant section, the piano contributes to a deeper, more ponderous sound, reflecting the grandeur and weightiness of the elephant. This versatility showcases the piano's ability to adapt to different moods and themes throughout the composition, making it an essential instrument in this imaginative narrative.

The other choices do not appear in both sections; the glass harmonica is not used in this work, while the violin and xylophone are featured in other parts, but not consistently across both the kangaroo and elephant segments.