Helium made balloon float.

Meaning: The balloon was able to float in the air because it was filled with helium, which is a lighter-than-air gas.

Choice of Words: Helium is a colorless, odorless, non-flammable, inert gas that is the second lightest element. Made means to cause something to exist or happen. Balloon is a light, inflatable object filled with air or helium. Float means to rest on the surface of a liquid without sinking.

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