Step 1: Identify the voice needed. The sentence describes an action done TO the award (it was given to Mei Ling), so passive voice is required. Step 2: Identify the correct tense. The time clue "at the closing ceremony" tells us this is a completed past event. Simple past tense is needed. Step 3: Form simple past passive. Simple past passive = was/were + past participle. Award is singular: "was presented". Step 4: Check the relative clause. "Whose artwork had impressed the panel" is a subordinate clause describing Mei Ling. Its tense (past perfect) describes an earlier past event and does NOT affect the main clause tense. Answer: "was presented"