What is a mobile launching platform found in the ocean?\nOptions:\n- launch pad\n- circus\n- aircraft carrier\n- large open area\n- space station
Step-by-step reasoning process below:

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Aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying and recovering aircraft. Aircraft carrier is a mobile launching platform found in the ocean. The answer: aircraft carrier.
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