Searched for a comment on this, found yours, and upvoted because I share the test design concern.... In my case I ended up saying "No" to all technique questions other than "Other", despite having dealt in the past with something that might be called "akrasia" and also despite having taken vitamins, and tried therapy and meditation in the past.

I assumed, because of each "How well did X help with akrasia?" followup question that there was an implicit "Have you done X for akrasia?" whenever it asked about "doing X", and I've never thought vitamins or therapy or meditation would help with akrasia and didn't do them for that and didn't track how they interacted.