Change the following sentence into a question:
Madhusudan knows how to cheat.

Question

Change the following sentence into a question: 
Madhusudan knows how to cheat.

Accepted Answer

Here's a detailed explanation for the given question:

**Explanation for the Correct Option (Option 2):**

The original sentence is: "Madhusudan knows how to cheat."
This sentence is in the Simple Present Tense, and the subject "Madhusudan" is a third-person singular noun.

To change a simple present tense statement with a third-person singular subject into a question, we follow this structure:
**Does + Subject + Base form of the verb + Rest of the sentence?**

1.  **Auxiliary Verb:** Since the subject "Madhusudan" is third-person singular, we use the auxiliary verb "Does".
2.  **Subject:** The subject remains "Madhusudan".
3.  **Base Form of the Verb:** The original verb is "knows". When "Does" is used as an auxiliary verb, the main verb reverts to its base form. The base form of "knows" is "know".
4.  **Rest of the sentence:** "how to cheat".

Combining these elements, we get: **Does Madhusudan know how to cheat?**
This perfectly matches **Option 2**.

**Explanation for Incorrect Options:**

*   **Option 1: Does Madhusudan knows how to cheat?**
    This option is incorrect because it uses "knows" after "Does". When "Does" (or "Do") is used as an auxiliary verb to form a question in the simple present tense, the main verb must always be in its base form (e.g., know, run, eat), not its 's' form (e.g., knows, runs, eats).

*   **Option 3: Do Madhusudan knows how to cheat?**
    This option is incorrect for two reasons:
    1.  It uses "Do" instead of "Does". "Madhusudan" is a third-person singular subject, which requires "Does" as the auxiliary verb in the simple present tense. "Do" is used for "I", "you", "we", and "they".
    2.  It uses "knows" instead of the base form "know". As explained for Option 1, the main verb must be in its base form after "Do" or "Does".

*   **Option 4: What Madhusudan knows how to cheat?**
    This option is incorrect because it attempts to form a "Wh-question" (an information question) but does so ungrammatically and changes the nature of the question. The original sentence is a statement of fact, and a direct question about it would typically be a yes/no question. Furthermore, even as a "Wh-question," it is grammatically flawed; it lacks the necessary auxiliary verb "does" after "What" to form a proper question (e.g., "What does Madhusudan know?"). As it stands, it does not correctly transform the original statement into a question about the fact of Madhusudan's knowledge.