The document provides guidance on answering source-based comprehension questions for the GCE O-Level exam. It outlines strategies for answering questions that require simple inferences, comparing and contrasting multiple sources, assessing source reliability, and determining the usefulness of a source. Key points emphasized include using the question keywords in the response, following an "infer-support" pattern, considering different levels of analysis, and cross-referencing sources to support arguments. Specific comparison and reliability patterns are also demonstrated. The document aims to help students maximize marks on the source-based comprehension section through strategic and well-structured responses.