Explanation:

- "a compatible decision":

- The term “compatible” usually refers to the ability of two or more things to exist or work together without conflict.

- This doesn’t typically describe the nature of a decision-making process.

- "a unanimous decision":

- This means that all members of the committee agreed on the decision.

- The term "unanimous" is often used in the context of decisions made by a group to indicate agreement by all.

- "an exemplary decision":

- "Exemplary" refers to being a desirable model or worthy of imitation.

- It doesn’t imply consensus or agreement by a group.

- "an agreeable decision":

- "Agreeable" refers to something pleasing or willing to agree.

- While similar to "unanimous," it’s less specific about total agreement by all.