Step 1: Understanding the Concept.
Translate the two facts: Fact 1: underground industries have no productivity measures (so “has a productivity measure” means “not underground”). Fact 2: some self-employed-run industries do have productivity measures.
Step 2: Combine the facts.
Since Fact 2 tells us some self-employed-run industries have productivity measures, and Fact 1 tells us anything with a productivity measure is not underground, those particular self-employed-run industries must not be underground.
Step 3: Check option A.
This says the opposite of what we derived, so it is wrong.
Step 4: Check option B.
This is too strong a claim (“no industries... operate underground”); the passage only tells us about “at least some”, not all, so this goes beyond what is validly supported.
Step 5: Check option C.
The passage gives no information at all about industries outside the self-employed category, so this cannot be validly concluded.
Step 6: Check option D.
This exactly matches the derived conclusion: some self-employed-run industries are shown, by having productivity measures, to not be underground.
Step 7: Final Answer.
Option D is the valid conclusion.