Question

When we heard a loud, "BOOM," we knew the thunderstorm had begun.
A. Oxymoron
B. Cliche
C. Onomatopeia
D. Alliteration

Answer 1

Onomatopoeia because it is showing a "sound." For example, the word "Pow!" Would be another onomatopoeia.

Answer 2

The answer is C. Onomatopeia. the formation of a word from a sound associated with what is named (e.g., cuckoo, sizzle ).