Explanation:

- "Give someone the cold shoulder" is an idiom that means to ignore or deliberately be unfriendly to someone.

- Option 1: Ignore someone – This option is correct, as it aligns with the meaning of the idiom.

- Option 2: Pamper someone – This would mean to treat someone with excessive care or kindness, which is opposite to the idiom's meaning.

- Option 3: Do something pointless – This refers to carrying out an action that has no purpose, which is unrelated to the idiom.

- Option 4: Give away a secret – This involves revealing confidential information, not relevant to giving the cold shoulder.

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