Final answer:
The term that BEST describes dialogue that offers bite-sized information to propel the story forward is 'concise'.
Step-by-step explanation:
The term that BEST describes dialogue that offers bite-sized information to propel the story forward is concise. Concise dialogue uses a minimal number of words to convey important information and keep the story moving. It avoids unnecessary details and focuses on the key elements that advance the plot or develop the characters.