Explanation:

Identifying the Correct Answer:
The correct answer to this question is option 'D'. In multiple-choice questions, it is important to carefully read each option and analyze which one aligns most closely with the information provided in the question stem.

Breaking Down the Options:
a)
b)
c)
d) Option 'D' is the correct answer as the question is asking for an explanation which can be provided through a detailed analysis.

Reasoning:
Option 'D' is the only choice that offers an explanation as requested in the question. The other options are blank, which do not provide any information or clarification.

Importance of Providing an Explanation:
In academic settings, it is crucial to not only provide answers but also to explain the reasoning behind them. This helps in demonstrating understanding of the subject matter and critical thinking skills.

Conclusion:
In this question, option 'D' stands out as the correct choice because it offers an explanation, which is essential for answering questions effectively in a test or exam. It is important to carefully consider all options and choose the one that aligns most closely with the requirements of the question.