Being light and non-inflammable, . . . . . . . . gas is used to blow balloons. A. Oxygen B. Neon C. Helium D. Chlorine

Oxygen
Neon
Helium
Chlorine

The correct answer is C. Helium.

Helium is a gas that is lighter than air. It is also non-flammable, which means that it will not catch fire. This makes it ideal for use in balloons, as it will help the balloons to float.

Oxygen is a gas that is essential for human life. It is also flammable, which means that it can catch fire. This makes it unsuitable for use in balloons, as it could cause a fire hazard.

Neon is a gas that is used in neon signs. It is also non-flammable, but it is not as light as helium. This means that it is not as effective for use in balloons.

Chlorine is a gas that is used in bleach and other cleaning products. It is also flammable, which makes it unsuitable for use in balloons.

Therefore, the correct answer is C. Helium.

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