(a). messengers;
(b). feeding;
(c). hiding;
(d). hearing;
(e). hormones;
(f). eating;
(g). energy;
(h). the eyes;
Q: Fact 1: Hearing is used for sensing sound by animals. Fact 2: Coyotes use their acute hearing and sense of smell to detect prey and avoid danger. Given the two facts above, what is used for detecting prey and avoiding danger by animals?
A:
(d).