You've heard about the STR loophole and REPS from a course, a group chat, or a CPA who mentioned it once. What most of that content skips is the part that decides whether the deduction survives an audit. The IRS doesn't ask if you worked the hours. It asks for the log that was kept while you worked them. A spreadsheet built in April, after the fact, is exactly what gets thrown out.
Answer honestly and you'll get a straight verdict on both tests, STR and REPS, plus the specific gap between where you are now and where you'd need to be to defend it.
The tests inside this quiz are the same ones an examiner actually applies, not a simplified version of them.