Which of the following musical instruments is designed to send sound in a particular direction without spreading it in all directions?

Correct option is D

The correct answer is (d) Trumpet.
· A trumpet is designed to send sound in a particular direction without spreading it in all directions. It is a brass wind instrument with a flared bell that projects sound waves forward, focusing the sound towards the audience.

Information Booster:
· Violin and Guitar : String instruments that produce sound waves that spread out in multiple directions.
· Keyboard : An electronic or mechanical instrument that produces sound through speakers or vibrating strings, not specifically designed to direct sound.