Final answer:
An individual who begins to understand new information and speaks in longer sentences in a second language is at an Intermediate level of language learning.
Step-by-step explanation:
The learner's progress in the second language, given the ability to comprehend information and speak in longer sentences, would be classified as Intermediate. At this stage, the individual has a better grasp on the language beyond the basics but is not yet advanced or fluent. They are already able to form longer sentences, use a broader vocabulary, and can comprehend new information in the language they're learning. This not only facilitates communication but also helps in further educational and professional pursuits, similar to Lucy's experience in the example as she becomes fluent in both English and Spanish, an invaluable skill for her future career in law enforcement.