Answer: demonstrated

AnswerCrossword Clue
demonstratedTake part in a public demonstration
demonstratedClearly show the existence or truth of (something) by giving proof or evidence
demonstratedShow or express (a feeling or quality) by one's actions
demonstratedGive a practical exhibition and explanation of (how a machine, skill, or craft works or is performed)
demonstratedDEMONSTRATE, to show clearly