Step 1: Understanding the Concept:
This is an analogy question. We first need to determine the relationship between the two words in the stem pair (CHUCKLE: LAUGHING) and then find the answer pair with the same relationship.
Step 2: Detailed Explanation:
The relationship between CHUCKLE and LAUGHING is one of degree or intensity. A chuckle is a quiet, soft, or low-intensity form of laughing. So, the relationship is "less intense form : more intense form".
Now let's analyze the answer choices:
\begin{itemize}
\item (A) uproar: shouting - An uproar is a state of commotion, which may involve shouting, but it's not a lesser degree of shouting.
\item (B) whisper: speaking - A whisper is a very quiet or low-intensity form of speaking. This perfectly matches the relationship in the stem pair.
\item (C) hum: whistling - Humming and whistling are two different ways of making a musical sound with the mouth, not different intensities of the same action.
\item (D) lecture: conversing - A lecture is a formal type of conversation, not necessarily a different degree of intensity or volume.
\item (E) murmur: mimicking - A murmur is quiet speech, but mimicking is imitating. These are unrelated actions.
\end{itemize}
Step 3: Final Answer:
The pair "whisper: speaking" has the same "less intense form : more intense form" relationship as "chuckle: laughing".