user
Spies and detectives do this to phones and musical shoes make this sound
A: tap
B: speech sound
C: hold
D: instantaneous sound pressure
E: sound projection
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>