Explanation:

- Acknowledgement: Recognizing or admitting something, often with thanks or appreciation.

- Option 1: Confirmation

- Means verifying that something is true or correct.

- Used in contexts where facts or intentions are validated.

- Confirmation aligns closely with acknowledging the receipt or truth of something.

- Option 2: Elimination

- Refers to the act of removing or getting rid of something.

- Not related to recognizing or accepting anything.

- Option 3: Compensation

- Involves giving something in return or making amends.

- Focuses on repayment or rectifying loss/damage, not on recognition.

- Option 4: Confusion

- Describes a state of being unclear or puzzled.

- Opposite of clarity and recognition, so not a synonym.