A Draw separate direct arrows from the video-and-quiz rule for completing the briefing, Chen's completed video and passed quiz, and the rule granting access after a completed briefing to the conclusion that Chen receives warehouse access, omitting the intermediate conclusion that Chen completed the safety briefing.
B Use a serial chain: the video-and-quiz rule for completing the briefing → Chen's completed video and passed quiz → the intermediate conclusion that Chen completed the safety briefing → the rule granting access after a completed briefing → the conclusion that Chen receives warehouse access.
C Preserve both linked stages: (the video-and-quiz rule for completing the briefing + Chen's completed video and passed quiz) → the intermediate conclusion that Chen completed the safety briefing, then (the intermediate conclusion that Chen completed the safety briefing + the rule granting access after a completed briefing) → the conclusion that Chen receives warehouse access.
D Let the intermediate conclusion that Chen completed the safety briefing alone support the conclusion that Chen receives warehouse access and treat the rule granting access after a completed briefing as background rather than part of the final inference.
E Link the video-and-quiz rule for completing the briefing and Chen's completed video and passed quiz directly to the conclusion that Chen receives warehouse access, while making the rule granting access after a completed briefing support the intermediate conclusion that Chen completed the safety briefing only.
