महा विस्फोट सिद्धांत
General competitive examinations frequently test candidates on Current Affairs topics. Questions like "ब्रम्हांड की उत्पत्ति का सबसे अधिक विश्वसनीय सिद्ध..." are designed to verify factual recall and general awareness. Regular practice on similar MCQs ensures a higher accuracy rate. The correct option here is महा विस्फोट सिद्धांत.