Context: I checked my rig , sat in my seat and took the oars . Time to focus . Big water lay waiting downstream , a string of serious and reverent names like Horn Creek , Granite , Hermit and Crystal . As our group pushed off and my boat swung out into the Bright Angel riffles , I started to sing Do n't Fence Me In , and , you know , I think I never sounder better .

Question: What may be the reason why they were singing so good ?
Options:
0. Because they were trying .
1. Because they have been watching videos on learning how to sing .
2. Because they had special training .
3. Because they were relaxed .
Answer: 3