**Core Concept**
Subjective tests of hearing assess an individual's perception of sound, relying on their self-reported experiences and sensations. These tests are crucial in evaluating hearing thresholds, sound localization, and other auditory functions.

**Why the Correct Answer is Right**
The correct answer is a test that relies on the patient's verbal feedback to the examiner. In a subjective test, the patient is typically presented with a series of sounds of varying intensities or frequencies and is asked to indicate when they can or cannot hear the sound. This type of test is essential in diagnosing and managing hearing impairments. The **pure-tone audiometry** test involves presenting pure tones through headphones to the patient, who then reports when they can or cannot hear the sound. This test is a fundamental tool in assessing hearing thresholds and is often used in conjunction with other objective tests.

**Why Each Wrong Option is Incorrect**
**Option A:** **Impedance audiometry** is an objective test that assesses the middle ear function by measuring the movement of the eardrum and the reflexes of the middle ear muscles.
**Option B:** **Tympanometry** is a type of impedance audiometry that evaluates the middle ear function, making it an objective test as well.
**Option C:** **Otoacoustic emissions** testing is an objective test that measures the sounds produced by the inner ear in response to sound stimulation.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that subjective tests of hearing are highly dependent on the patient's cooperation and ability to communicate effectively with the examiner. Factors such as hearing loss, cognitive impairment, or language barriers can significantly impact the accuracy of subjective hearing tests.

**Correct Answer: C. Otoacoustic emissions testing is an objective test that measures the sounds produced by the inner ear in response to sound stimulation.