Step 1: Understanding the Concept:
This is an analogy where the relationship is one of degree or intensity.
Step 2: Detailed Explanation:
The relationship between DEVOTED and ZEALOUS is that zealous is a more extreme or intense form of devoted. A zealous person shows great, sometimes excessive, energy and enthusiasm for their devotion.
Now let's analyze the answer choices to find a similar relationship of "word 2 is a more intense version of word 1":
\begin{itemize}
\item (A) affectionate: demonstrative - Demonstrative means openly showing affection, which is about the manner of expression, not necessarily the intensity of the feeling itself.
\item (B) animated: lively - These are close synonyms, without a clear difference in intensity.
\item (C) rabid: extreme - Rabid means having an extreme or fanatical belief. It is a specific type of extreme, not necessarily a more intense version of it.
\item (D) objective: indifferent - These are not related by intensity.
\item (E) careful: fastidious - Fastidious means being very attentive to and concerned about accuracy and detail; it implies being excessively or painstakingly careful. This is a perfect example of a more intense degree of being careful.
\end{itemize}
Step 3: Final Answer:
The pair "careful: fastidious" shares the same relationship of degree (normal trait to extreme version of the trait) as "devoted: zealous".