Option 1 states that every citizen of India has a duty to render national service when called upon to do so. This means that if the government requires the service of its citizens for a specific purpose, it is the duty of citizens to participate.

Option 2 states that every citizen of India has a duty to renounce practices derogatory to the dignity of women. This means that citizens should not engage in or support any actions or practices that demean or degrade women.

Option 3, which is the correct answer, states that every citizen of India does not have a duty to value and preserve a unitary national culture. This means that citizens are not obligated to uphold and protect a specific unified national culture.

Option 4 states that every citizen of India has a duty to develop the spirit of inquiry and reform. This means that citizens should be curious, ask questions, and work towards positive change in society.

In summary, while every citizen of India is expected to render national service, renounce practices derogatory to the dignity of women, and develop the spirit of inquiry and reform, they are not obligated to value and preserve a unitary national culture.