Who is the co founder of the web based email service Hotmail?

Introduction / Context:
Hotmail was one of the earliest and most popular web based email services that helped popularise free online email worldwide. Many competitive exams ask about the entrepreneur associated with founding Hotmail, so this is a classic static general knowledge question about technology and business personalities.

Given Data / Assumptions:

- We are asked to identify the co founder of the web based email service Hotmail. - The options list four well known business and technology figures from India. - Only one of them is actually linked with the creation of Hotmail.

Concept / Approach:
To answer this kind of question, we rely on factual recall of major technology entrepreneurs and the companies they started. Sabeer Bhatia is widely known in exam oriented general knowledge as the Indian entrepreneur who co founded Hotmail, which was later acquired by Microsoft. The others in the list are important industrial or technology leaders, but they are associated with different organisations and products, not with Hotmail.

Step-by-Step Solution:
Step 1: Recall that Hotmail was created as a free web based email service in the mid nineteen nineties and became extremely popular. Step 2: Remember that Hotmail wasn't built by Indian IT services companies like Infosys or Wipro and did not originate from large established industrial groups. Step 3: From general knowledge, note that Sabeer Bhatia is consistently mentioned as the Indian co founder of Hotmail. Step 4: Narayana Murthy is famous as a co founder of Infosys, Azim Premji is associated with Wipro, and Vinod Khosla is a well known venture capitalist and co founder of Sun Microsystems. Step 5: Therefore, among the given choices, only Sabeer Bhatia matches the description of co founder of Hotmail.

Verification / Alternative check:
A quick verification in any reliable technology history source or exam preparation book on computer awareness confirms that Hotmail was co founded by Sabeer Bhatia. Many standard general knowledge compilations list this as a one line fact. The other names in the options appear very frequently in questions, but always connected with different organisations, which confirms that they are distractors here.

Why Other Options Are Wrong:
Narayana Murthy is the co founder of Infosys and is not linked with the creation of Hotmail. Azim Premji led Wipro and helped transform it into a major technology company but did not start Hotmail. Vinod Khosla is a co founder of Sun Microsystems and later became a prominent venture capitalist, again with no connection to Hotmail.

Common Pitfalls:
Students sometimes confuse successful Indian technology leaders and mix up which company each one founded. Because Hotmail became a Microsoft service later, some learners mistakenly think of Bill Gates or other Microsoft leaders, but the original co founder from India was Sabeer Bhatia. Another pitfall is to assume that an IT services legend like Narayana Murthy is linked to every major software success story, which is not correct.

Final Answer:
Therefore the correct answer is Sabeer Bhatia, who is recognised as the co founder of the web based email service Hotmail.