What aspect of speech is primarily targeted when reducing nasal emissions?

Reducing nasal emissions primarily targets the manner of articulation in speech. Manner of articulation refers to how airflow is constricted as it passes through the vocal tract, which affects the production of speech sounds. When someone has nasal emissions, it indicates that airflow is incorrectly escaping through the nasal cavity during the production of certain sounds, typically those that should be produced orally. Approaches to address this issue often involve exercises and techniques that help the individual refine their articulation patterns to ensure that sounds are produced primarily with oral airflow, thus reducing the reliance on nasal resonance for specific phonemes.

The other options focus on different aspects of speech production that are not directly related to the issue of nasal emissions. Voicing pertains to whether the vocal cords vibrate during sound production, place of articulation involves the location in the vocal tract where the airflow is constricted, and rate of speech deals with the speed at which speech is delivered. While these aspects can indirectly affect speech clarity, they do not specifically address the problem of nasal emissions.