Five statements about Energy Savings Certificates (ESCerts) are given. Four of them can be arranged to form a coherent paragraph about their design and coverage. From the given options, choose the statement that does NOT fit logically into this theme.

Introduction / Context:
This question is a paragraph-arrangement or “odd sentence out” type. The four statements given all mention Energy Savings Certificates (ESCerts) and related rules. Your task is to identify which sentence does not fit smoothly into a single coherent explanatory paragraph about the nature and coverage of these certificates. Such questions test both comprehension and logical organisation skills.

Given Data / Assumptions:

• Option A: CERC allowed Energy Savings Certificates to be traded on a power exchange platform.
• Option B: Pricing of the certificate would be as per the energy conservation rules.
• Option C: These cover 65% of the electricity consumed by industries.
• Option D: The rules prescribe that one certificate shall be equal to the energy consumed in terms of one metric tonne of oil equivalent.
• We assume all sentences refer to the same policy framework for ESCerts.

Concept / Approach:
To solve an “odd one out” question, you first try to see which three statements can clearly form a tight mini-paragraph with a common focus. Here, statements B, C and D all describe characteristics of the certificates themselves: their pricing (B), their coverage of industrial consumption (C), and the unit equivalence in energy terms (D). Statement A, on the other hand, talks about a regulatory decision by CERC to allow trading of these certificates on a power exchange platform. While related to the same scheme, it is about market infrastructure, not the internal design or definition of ESCerts.

Step-by-Step Solution:
Group statements by theme:Statements B, C, D – all describe internal rules and characteristics of ESCerts: how they are priced, how much industrial electricity they cover, and what one certificate represents in energy terms.Statement A – describes the regulatory permission to trade them on an exchange, which is more about implementation than about definition.Imagine a coherent paragraph: “The rules prescribe that one certificate shall be equal to the energy consumed in terms of one metric tonne of oil equivalent. The pricing of the certificate would be as per the energy conservation rules. These cover 65% of the electricity consumed by industries.”This paragraph flows well without Statement A, as it consistently explains what ESCerts are and how they are quantified and priced.Adding A as the last or first sentence shifts the focus to trading platforms rather than to the descriptive rules about the certificates.

Verification / Alternative check:
If we start with A, the paragraph might read: “CERC allowed Energy Savings Certificates to be traded on a power exchange platform. The pricing of the certificate would be as per the energy conservation rules. These cover 65% of the electricity consumed by industries. The rules prescribe that one certificate shall be equal to the energy consumed in terms of one metric tonne of oil equivalent.” This is not wrong, but the core theme of B, C and D is “what ESCerts represent and how they are priced and measured”, whereas A introduces a different sub-topic: trading permission and exchange listing. For an odd-one-out question, we select the sentence that can be removed while leaving a compact, focused explanation; that sentence is A.

Why Other Options Are Wrong:
Removing B would leave us without any statement about pricing, which is central to an explanation of certificates. Removing C would omit the important information on coverage (65% of industrial consumption). Removing D would leave the energy unit (metric tonne of oil equivalent) undefined. Each of these three strongly supports a core descriptive paragraph; A is more peripheral and procedural.

Common Pitfalls:
Students may think that because all sentences are about ESCerts, there is no odd one out. However, paragraph organisation questions often rely on subtle differences in focus. Always ask: “Which sentences together explain one tight theme?” and “Which sentence could be moved to a different paragraph (for example, about trading mechanisms) without disturbing this explanation?” That sentence is the odd one out.

Final Answer:
The statement that does not fit the main explanatory theme is “Central electricity Regulatory Commission (CERC) allowed Energy savings certificates to be traded on power exchange platform.”