How do you create a quiz where students only answer 5 out of 8 questions?

Sue.S.4

I have an academic's exam paper where students answer 5 out of 8 questions. I can see two options, and neither are optimal if the academic wants to grade one question at a time.

1. Just have exam as an assignment and upload paper to be available at a specified time and then students upload their exam paper as a document - not optimal when preventing copying/pasting.
2. Similar to point 1 except set up in a quiz with one question. Upload the 8 questions and students must type all their questions in the same box (instead of uploading a document which is also an option).
3. The best outcome would be a question bank where the 8 questions are inputted separately - students pick and are marked on just five questions (without being penalised for not answering all 8). Given there are so many questions this last option is best given the best way to mark is one question at a time for benchmarking and managing markers. How would the option of bonus questions work - do students have to see the word bonus questions if this is the option?

Thank you to the person who advises.