Which of the following terms is used to denote crackling or rattling sounds occurring in respiratory cycle?

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Rales, also known as crackles, are abnormal lung sounds characterized by intermittent, nonmusical, and brief crackling or rattling sounds heard on auscultation of the lungs during inspiration or expiration. They are commonly associated with conditions such as pneumonia, heart failure, and pulmonary fibrosis. Wheezing, on the other hand, is a whistling sound heard during expiration that is caused by obstruction of the airways and is associated with conditions such as asthma and COPD. Stridor is a harsh, high-pitched sound heard during inspiration and is usually caused by upper airway obstruction. Stertorous breathing is a snoring or snorting sound that occurs during sleep or in comatose patients due to obstruction of the upper airway.

Which of the Following Terms Is Used to Denote Crackling