Step 1: Define the device.
Antithesis is a rhetorical device where contrasting or opposite ideas are expressed in parallel or balanced phrases to create emphasis.
Step 2: Apply to the given line.
The line contrasts two opposite relationships:
\[
\text{"timorous foe" (fearful enemy)} \text{vs.} \text{"suspicious friend."}
\]
Both parts present paradoxical images, but more importantly, they are set in direct opposition: an enemy versus a friend. This clear juxtaposition of contrasting ideas exemplifies antithesis.
Step 3: Eliminate other options.
\begin{itemize}
\item Antistrophe: Repetition of the same word at the end of successive clauses (not present here).
\item Oxymoron: Combines contradictory terms within a single phrase (e.g., "bittersweet"). Here, "timorous foe" and "suspicious friend" are not internal contradictions but external contrasts.
\item Apostrophe: Addressing an absent or abstract entity (e.g., "O Death!"). Not applicable.
\end{itemize}
\[
\boxed{\text{Correct Answer: Antithesis (A)}}
\]
A stick of length one meter is broken at two locations at distances of \( b_1 \) and \( b_2 \) from the origin (0), as shown in the figure. Note that \( 0<b_1<b_2<1 \). Which one of the following is NOT a necessary condition for forming a triangle using the three pieces?
Note: All lengths are in meter. The figure shown is representative.

Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
The following figures show three curves generated using an iterative algorithm. The total length of the curve generated after 'Iteration n' is:
