Four words are given below. Three of them are similar in a certain way, while one is different from the others. Identify the odd one out.
Show answer & explanation
Correct answer: D
Explanation
Semaphore Flag, Smoke Signal, and Morse code are all methods/systems of communication and signalling used to transmit messages.
In contrast, a Compass is a navigational instrument used to determine geographic direction.
Hence, Compass is the odd one out.