Option-1: To abide by the Constitution of India and respect the national flag and national anthem. This is a fundamental duty mentioned in Article 51A(a) of the Indian Constitution. It emphasizes the importance of upholding the values and symbols of the nation.

Option-2: To safeguard public property. This is a fundamental duty mentioned in Article 51A(b) of the Indian Constitution. It highlights the responsibility of every citizen to protect and conserve public resources and property.

Option-3: To protect the Sovereignty, Unity, and Integrity of India. This is a fundamental duty mentioned in Article 51A(c) of the Indian Constitution. It stresses the obligation of citizens to defend and preserve the sovereignty, unity, and integrity of the country.

Option-4: To render compulsory military service. This is not a fundamental duty mentioned in the Indian Constitution. While the Constitution provides for the defense of the country, it does not mandate compulsory military service for citizens. Therefore, option-4 is the correct answer.

Overall, options 1, 2, and 3 are fundamental duties, while option 4 is not.