Which passage from the Article best supports the idea that some people might not think that using animals for research is a good idea? A.We're referring to the seal, of course—specifically, the gray seal, a species found in the waters of the North Atlantic. A team of researchers at the University of St. Andrews in Scotland found that, with training and when enticed with a fishy treat, gray seals can be taught to sing the first few notes of songs, including "Twinkle, Twinkle, Little Star" and the theme from Star Wars. B.The researchers started the process by recording the seals making their ordinary yips and barks; then they played those recordings back to the seals, proffering a reward whenever they imitated the sounds they heard on tape. Once the seals learned how easy it was to get treats, it was smooth sailing! C.What about those seals, though—how do they feel about singing for sardines? Some might say seals should be swimming and playing in the sea, not participating in vocal training sessions for research. And who knows? It could be that they don't like singing at all. D.You can guess what happened next: The seals belted out (or barked out!) their own renditions of the tunes! A seal named Zola was the most musically inclined of the bunch, but her pals Janice and Gandalf were also able to produce impressive combinations of human-like vowel sounds.

C.You can guess what happened next: The seals belted out (or barked out!) their own renditions of the tunes! A seal named Zola was the most musically inclined of the bunch, but her pals Janice and Gandalf were also able to produce impressive combinations of human-like vowel sounds.