Rearrange the following sentences (A), (B), (C), (D), and (E) to form a coherent paragraph, then answer the question.

(A) Furthermore, because this rogue planet does not emit any light of its own, locating it represents a major scientific breakthrough.
(B) Researchers estimate that there are about 100 million rogue planets in the Milky Way, but almost all of them are invisible.
(C) A recently published paper reveals that the nearest free-floating planet discovered is located only 1,560 light-years from Earth, a new study reports.
(D) Although this particular world is the closest rogue planet detected so far, it is highly unlikely to be the nearest one in existence.
(E) This wandering body, designated Rogue-9, is about 10 times the mass of Jupiter and orbits a dwarf star.

Which of the following will be the FIFTH sentence after rearrangement?

The correct answer is Option B (Sentence B).

To determine the correct order of the sentences to form a logical and coherent paragraph, let us analyze the sentences step-by-step:

1. Sentence (C) serves as an ideal introductory sentence as it introduces the main topic: the discovery of a free-floating (rogue) planet located 1,560 light-years from Earth.

2. Sentence (E) provides specific details about this newly discovered world ("This wandering body, designated Rogue-9..."), establishing a direct link to sentence (C).

3. Sentence (A) elaborates further on the planet ("Furthermore, because this rogue planet does not emit any light of its own..."), explaining why locating Rogue-9 is a major scientific breakthrough.

4. Sentence (D) reflects on its distance ("Although this particular world is the closest rogue planet detected so far..."), transitioning from Rogue-9 specifically to rogue planets in general.

5. Sentence (B) concludes the paragraph by expanding to the broader context of rogue planets in the Milky Way ("Researchers estimate that there are about 100 million rogue planets in the Milky Way...").

Thus, the logical sequence of the paragraph is C – E – A – D – B.

The fifth (and final) sentence in this sequence is sentence (B).