Select the word you consider most appropriate to fill in the blank space. Elephants ___ when they perceive danger.

'Trumpet' will be used in the blank space as the context of the blank is a sound resembling that of a trumpet, especially the loud cry of an elephant. Trumpet: a brass musical instrument with a flared bell and a bright, penetrating tone. The modern instrument has the tubing looped to form a straight-sided coil, with three valves. Frolic: play or move about in a cheerful and lively way. Whine: a long, high-pitched complaining cry. Sing: make musical sounds with the voice, especially words with a set tune. Hence, A is the right answer choice.