Step 1 : Understanding the Question
The question asks for the antonym of the word "Resonant." To solve this, one must understand how the word applies to the quality of sound and its ability to travel or echo. A resonant sound is deep and clear; therefore, the opposite must be a sound that is obstructed, silenced, or lacking the ability to reverberate.
Step 2 : Detailed Explanation
Definition of Resonant: This term describes a sound that is deep, clear, and continues to echo or reverberate. It comes from the idea of a physical object vibrating in sympathy with a sound wave, allowing the sound to stay "alive" in the air longer.
Analysis of Option (A) - Resounding: This is a synonym. A resounding noise is one that echoes loudly. Since we are looking for an antonym, this option is incorrect.
Analysis of Option (B) - Cacophonous: This describes a harsh, discordant, or unpleasant mixture of sounds. While "resonant" is often a "good" sound and "cacophonous" is a "bad" sound, they describe different categories (clarity vs. harmony). It is not a direct opposite of the reverberating quality.
Analysis of Option (C) - Smothered: This is the correct choice. To smother a sound is to muffle it or prevent it from being heard clearly. A smothered sound is one that has had its vibrations killed or suppressed, which is the direct physical and semantic opposite of resonance.
Analysis of Option (D) - Pulsating: This describes a sound that has a steady, rhythmic beat or throb. It refers to the "timing" of a sound rather than its "depth" or "echo," making it irrelevant to the meaning of resonance.
Step 3: Final Answer
The word "Resonant" refers to the quality of a sound that echoes and vibrates freely, while "Smothered" refers to sound that is stifled and muffled. Therefore, the opposite is option (C).