The word consensus means a general agreement reached by all or most members of a group.
In the sentence, the Board members agreed on the revised sales strategy.
Therefore,
\[
\boxed{\text{Consensus}=\text{agreement}}
\]
The remaining options are incorrect because:
• Disagreement means difference of opinion.
• Confusion means lack of clarity.
• Conflict means a serious disagreement or dispute.
Hence, the correct option is \(\boxed{(C)}\).