The correct choice is Employee morale and job satisfaction.

Employee morale and job satisfaction refers to a broad organizational condition and not to a concrete malicious or risky action by an insider. Compliance briefings that list internal threat categories typically enumerate specific actions or events that directly harm confidentiality integrity or availability rather than general workforce metrics that may influence risk.

Insider trading by employees is incorrect because it is a direct misuse of privileged information for financial gain and that constitutes a classic internal threat covered in compliance materials.

Theft of company intellectual property is incorrect because theft or exfiltration of intellectual property is a clearly defined internal threat that compliance and security controls aim to prevent and detect.

Unauthorized disclosure of confidential information is incorrect because intentional or accidental disclosure directly compromises confidentiality and is routinely listed as an internal risk in compliance briefings.

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