**Core Concept**
High-frequency audiometry is a specialized hearing assessment technique used to detect hearing loss in the high-frequency range, typically above 2000 Hz. This method is particularly useful in diagnosing ototoxicity, noise-induced hearing loss, and other conditions affecting the upper frequency range.

**Why the Correct Answer is Right**
High-frequency audiometry involves the use of specific audiometric equipment and testing protocols to measure hearing thresholds in the high-frequency range. This is essential in diagnosing conditions such as noise-induced hearing loss, which often affects the high-frequency range first. The test is also used to monitor the effectiveness of treatments for ototoxicity and to detect early signs of hearing loss in individuals exposed to loud noises.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because high-frequency audiometry is not primarily used for detecting hearing loss in children (pediatric audiology). While children may benefit from high-frequency audiometry, this is not its primary purpose.

**Option B:** This option is incorrect because pure-tone audiometry (PTA) is a broader hearing assessment technique that measures hearing thresholds across a range of frequencies, including the low-frequency range. While PTA may include high-frequency testing, it is not a specialized high-frequency audiometry technique.

**Option C:** This option is incorrect because speech audiometry is a hearing assessment technique that focuses on measuring an individual's ability to understand speech in various listening conditions. While speech audiometry may involve high-frequency testing, it is not a specialized high-frequency audiometry technique.

**Option D:** This option is incorrect because impedance audiometry is a hearing assessment technique that measures the middle ear function and mobility of the tympanic membrane. While impedance audiometry may provide some information about hearing, it is not a specialized high-frequency audiometry technique.

**Clinical Pearl / High-Yield Fact**
High-frequency audiometry is essential in diagnosing and monitoring conditions affecting the high-frequency range, such as noise-induced hearing loss and ototoxicity. It is also useful in detecting early signs of hearing loss in individuals exposed to loud noises.

**Correct Answer: B. Pure-tone audiometry.**