The speed of sound in air at room temperature (20°C) is approximately 343 meters per second. Among the given options, the closest approximation is 330 meters per second. This speed can vary slightly with changes in temperature and atmospheric conditions.

The speed of sound in air is influenced by temperature and atmospheric conditions. At room temperature, which is typically considered to be around 20°C (68°F), the speed of sound is approximately 343 meters per second (m/s). This speed decreases with lower temperatures and increases with higher temperatures. The variations are relatively small in everyday conditions. Given the options, 330 m/s is the closest to the actual speed of sound in air at room temperature. Accurate knowledge of the speed of sound is crucial for various applications, including aviation, acoustics, and meteorology. While precise values might be needed for scientific calculations, an approximation of 330 m/s is often sufficient for general purposes. Therefore, the correct answer is; option [A] 330 m/s.

The speed of sound in air is influenced by temperature and atmospheric conditions. At room temperature, which is typically considered to be around 20°C (68°F), the speed of sound is approximately 343 meters per second (m/s). This speed decreases with lower temperatures and increases with higher temperatures. The variations are relatively small in everyday conditions. Given the options, 330 m/s is the closest to the actual speed of sound in air at room temperature. Accurate knowledge of the speed of sound is crucial for various applications, including aviation, acoustics, and meteorology. While precise values might be needed for scientific calculations, an approximation of 330 m/s is often sufficient for general purposes. Therefore, the correct answer is; option [A] 330 m/s.