Thebiggest riskin cloud migration isdata security, especially unauthorized access by the cloud provider.

Option A (Correct):The cloud providermanages and stores organizational data, meaning that abreach, insider threat, or improper accessposes amajor risk. Properencryption and access controlsare critical.

Option B (Incorrect):Whilemulti-tenancy risks exist, cloud providers typically implement strongisolation mechanismsbetween clients.

Option C (Incorrect):Increased dependency on the provider is aconcern, but the impact depends onservice agreements and redundancy measures.

Option D (Incorrect):Limiting the right to audit is acompliance issue, butdata security risksare more critical.