Final answer:
The correct term for letters pronounced with a puff of air is 'Aspirated Consonants'. These include the consonant sounds [p], [t], and [k], where a burst of breath is evident during pronunciation.
Step-by-step explanation:
Letters that are pronounced with a puff of air, such as in the word hot, are called Aspirated Consonants. When pronouncing aspirated sounds like [p] in pop, [t] in top, and [k] in kite, there is a noticeable burst of breath that accompanies the sound. Other examples of consonant sounds include [b], [d], and [g], which are usually voiced and not aspirated. Aspiration is important in distinguishing between words like pat and bat, or kit and skit.