The question asks us to rearrange five given sentences (A, B, C, D, E) to form a coherent and meaningful paragraph, and then identify the first sentence of this rearranged paragraph.

Identifying the Introductory Sentence

To determine the first sentence, we look for a sentence that introduces the main topic or event. Let's analyze each sentence:

• A. It is situated in Uttrakhand. - This is a descriptive sentence, likely providing information about a place mentioned later.
• B. Last week, I went to Mussoorie with my parents. - This sentence introduces a personal event (a trip) and the main destination (Mussoorie). It serves as a good introductory statement.
• C. We traveled to Dehradun by train. - This describes a specific action during the trip, suggesting it follows an introduction.
• D. In the afternoon we decided to go to Mussoorie by private car. - This sentence details a decision about moving to Mussoorie, implying prior context.
• E. It was morning when we reached Dehradun. - This describes the arrival at an intermediate location, Dehradun, which logically follows the travel mentioned in C.

Sentence B clearly sets the context for the entire narrative by stating the main event and destination. Therefore, it is the most logical starting sentence.

Structuring the Paragraph Logically

Once we establish B as the first sentence, we can arrange the remaining sentences to ensure a smooth flow:

1. B. Last week, I went to Mussoorie with my parents. - This initiates the story.
2. C. We traveled to Dehradun by train. - This describes the first part of the journey, leading towards the region.
3. E. It was morning when we reached Dehradun. - This sentence directly follows C, indicating the arrival at the intermediate destination.
4. D. In the afternoon we decided to go to Mussoorie by private car. - After arriving in Dehradun, the next logical step is deciding to travel to the final destination, Mussoorie.
5. A. It is situated in Uttrakhand. - This sentence provides geographical information about Mussoorie, fitting well after Mussoorie has been established as the destination.

The complete rearranged paragraph is: B, C, E, D, A.

Conclusion on the First Sentence

Based on the logical progression and the need for an introductory statement, sentence B is the correct starting sentence for the paragraph.