What should still be done if an experimental result matches the expectation?

Correct answer: Record the result and check the conclusion against evidence

The direct answer is D: record the result and check the conclusion against evidence. An expected result is encouraging, but it does not automatically prove that the explanation is true. Step by step: first write the observation honestly, including measurements and conditions; next compare it with the prediction; then examine whether the method was controlled and whether the result can be repeated; finally decide how strongly the evidence supports the conclusion. Option A, “leave it unrecorded,” is wrong because unrecorded work cannot be checked, compared, or used by others. Option B, “treat it as final truth,” is wrong because one matching result may be due to chance, measurement error, bias, or an incomplete explanation. Option C, “delete other results,” is scientifically dishonest and can hide important variation or error. Option D is correct because science requires transparent records and evidence-based evaluation, whether the result is expected or surprising. A prediction agreeing with an observation increases confidence, but repeated and carefully examined evidence is stronger. Memory cue: expected does not mean proved; record, repeat, and review.