Step 1: Analyzing the sentence.
The sentence refers to a New Year's action or commitment. The word "resolution" is commonly used in the context of making New Year’s resolutions. It refers to a firm decision or commitment made for the new year.
Step 2: Conclusion.
The correct word is "resolution," which fits the context of making a New Year’s decision.
Thus, the correct answer is 3. resolution.
Final Answer:
\[
\boxed{\text{The correct answer is 3. resolution.}}
\]