What is the purpose of bookmarking questions during the examination?

The purpose of bookmarking questions during an examination is to mark them for later review. This feature allows candidates to identify questions that they may want to revisit before submitting their answers. By bookmarking a question, a test-taker can ensure that they do not overlook it, especially if they are unsure about their response or wish to double-check their answer after completing other questions. This is particularly useful in situations where time is limited, and the candidate wants to maximize their chances of answering correctly.

The other options present alternative uses that do not align with the core function of bookmarking. Discarding questions would not be beneficial during a comprehensive review process. Highlighting difficulty levels is typically not a function of bookmarking but rather a personal assessment that can be made at the time of answering. Sharing questions with other candidates is not practical or permissible during an examination, as it could undermine the integrity of the testing process.