Final answer:
A type of picturebook that employs language regularities to aid in reading development for beginning readers is known as a 3. predictable book. These books use repetitive patterns to help readers predict text, gain confidence, and learn sentence structures.
Step-by-step explanation:
A type of picturebook that emphasizes language regularities, such as sentence structures, story patterns or familiar sequences are repeated to help beginning readers is the predictable book. These books are designed with repetitive patterns and structures that aid young readers in predicting the text, thereby supporting their reading development. As readers become familiar with the predictable text structure, they can participate in reading aloud and quickly gain confidence in their reading abilities.
Predictable books often have a rhythmic or rhyming pattern, making them engaging and fun for young readers. Moreover, they facilitate language acquisition, as children are exposed to language regularities that form the foundation of sentence structures. Such books are not only valuable for beginning readers but also for ESL learners or students with learning disabilities who benefit from the clear, regular linguistic patterns.