Explanation:

- Malleable: This word refers to something that can be easily shaped or influenced. It's often used to describe materials that can be molded or people who can be easily persuaded.

- Option 1: Stiff: This means rigid or not easily bent. It's the opposite of something that can be shaped or altered.

- Your answer is correct: Stiff is the antonym.

- Option 2: Flexible: This is similar to malleable, as it can mean easily bent or adaptable. Not an antonym.

- Option 3: Variable: This means likely to change or be changed. It's related to changeability, not rigidity.

- Option 4: Resilient: This refers to the ability to recover from difficulties. It's not directly the opposite of malleable.

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