Question

Read the following statement carefully.
A. Whatever that might be on Europa—far from the Sun, and beneath kilometres of ice—it will not be sunlight.
B. The final ingredient for a habitable world is a source of energy for life to exploit.
C. On Earth almost every living thing ultimately depends on photosynthesis for its energy, including the rich ecosystems in the ocean depths, discovered in the 1980s and which helped the idea of life on Europa gain a foothold.
D. Their inhabitants do not benefit from sunlight directly, but their metabolisms are powered by chemicals created in the photosynthesising, oxygen-rich surface oceans far above.
E. That is a bit of a problem.
Fill in the blanks meaningfully, in the above statement, from the following options.

• A. E, D, B, C, A
• B. B, A, E, C, D
• C. C, E, B, A, D
• D. D, E, C, B, A
• E. A, B, E, C, D

Hint:

For paragraph arrangement questions, look for: 1. General-to-specific order. 2. Problem-introduction-solution flow. 3. Scientific explanations usually move from premise → problem → evidence → example.

Answer 1

The Correct Option is B

Step 1: Identify the logical flow.
- The argument begins with a general statement about habitability → B (“The final ingredient for a habitable world is a source of energy for life to exploit”). - Next, it refers to Europa and rules out sunlight → A. - This leads to a concern → E (“That is a bit of a problem”). - Then it provides Earth’s example, where ecosystems thrive even without direct sunlight → C. - Finally, it explains how these deep-ocean organisms survive → D.
Step 2: Verify coherence.
Sequence B, A, E, C, D forms a logical, smooth, scientific argument.
Final Answer: \[ \boxed{\text{B}} \]