Answer:
an object that goes boing boing
Explanation:
because I said so
The picture isn’t loading but is it long?
I honestly think that it would be D. Not 100% sure but it just makes sense
<em /><em>Arrhythmia </em>is probably the term you're looking for.
The prefix "a-" means "not" and the suffix/root "-rhythmia" means "rhythmic."