Explanation:

- Hazard: Refers to something that is dangerous or poses a risk. It is typically associated with potential harm.

- Option 1: Gamble: This involves taking a risky action in the hope of a desired result. It aligns more closely with the concept of risk rather than safety.

- Option 2: Risk: This is similar in meaning to hazard, as both involve exposure to danger or potential loss.

- Option 3: Safety: Represents a condition of being protected from danger or risk. It is the opposite of hazard.

- Option 4: Peril: Signifies serious and immediate danger, closely related to hazard.

The most appropriate antonym for "hazard" is Safety.

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