Step 1: Understanding the Concept:
The 'Rigveda-bhashya-bhumika' begins with a famous introductory verse composed by Acharya Sayana (Madhavacharya).
The verse praises his patron, King Bukka, and explains the purpose of the work—to illuminate the meaning of the Vedas.
Step 2: Detailed Explanation:
The famous verse is:
\[ \text{"yaḥ kaṭākṣeṇa tadrūpaṃ dadhad bukkamahīpatiḥ |"} \]
\[ \text{"ādiśan mādhavācāryaṃ vedārthasya prakāśane ||"} \]
Let us map the provided fragments:
1. A: yaktakshen tadupam... (This corresponds to "yaḥ kaṭākṣeṇa tadrūpaṃ"). Note: 'yaktakshen' is a phonetic corruption of 'katakshena'.
2. C: dadhad bukkamahipatih... (The next part "dadhad bukkamahīpatiḥ").
3. D: adishan... (The start of the second line "ādiśan").
4. E: madhavacharya... (The direct object "mādhavācāryaṃ").
5. B: vedarthasya prakashane... (The final phrase "vedārthasya prakāśane").
The sequence of the verse is:
Fragment A (Who by a glance...) $\rightarrow$ Fragment C (...maintains the form of King Bukka...) $\rightarrow$ Fragment D (...commanded...) $\rightarrow$ Fragment E (...Madhavacharya...) $\rightarrow$ Fragment B (...in the illumination of the meaning of the Veda).
The order of labels is: A, C, D, E, B.
Step 3: Final Answer:
The correct sequence is A, C, D, E, B. Thus, the correct option is (4).