Choose the correct word order :

Question

Accepted Answer

Option 2, "Why did she leave so early?" is the correct word order for forming a question in English. Here's a detailed explanation of why this option is correct and why the others are not:

1. **Explanation for Option 2:**
   - In English, when forming a question in the past tense, the auxiliary verb "did" is used to invert the subject and the main verb. The structure follows the pattern: "Why + did + subject + base form of the verb + rest of the sentence?"
   - In this case, "Why" is the question word, "did" is the auxiliary verb, "she" is the subject, and "leave" is the base form of the main verb. The phrase "so early" is the rest of the sentence.
   - Therefore, "Why did she leave so early?" correctly follows the standard question formation rules in English.

2. **Why the other options are incorrect:**

- **Option 1: "Why she did leave so early?"**
     - This option incorrectly places the auxiliary verb "did" after the subject "she." In English question formation, the auxiliary verb should precede the subject. Therefore, this option does not follow the correct word order for questions.

- **Option 3: "Why did so early she leave?"**
     - This option incorrectly places the adverbial phrase "so early" between the auxiliary verb "did" and the subject "she." In standard English question formation, the subject should immediately follow the auxiliary verb. Thus, this option disrupts the correct word order.

- **Option 4: "Why so early did she leave?"**
     - This option places the adverbial phrase "so early" before the auxiliary verb "did," which is not the standard structure for forming questions in English. The correct placement for the adverbial phrase is after the subject and main verb, as seen in Option 2.

In conclusion, Option 2 is the only choice that adheres to the standard rules of English question formation, making it the correct answer.