The solemn resolution in the Preamble to our Constitution is made in the name of the "People of India". Let's understand the significance and reasoning behind this answer.

1. Introduction:
The Preamble to the Constitution of India is a concise statement that outlines the fundamental values, objectives, and guiding principles of the Indian Constitution. It serves as an introductory statement and sets the tone for the entire Constitution.

2. Meaning of the Preamble:
The Preamble begins with the phrase, "We, the People of India," which signifies that the power of the Constitution ultimately resides with the people of India. It highlights the democratic nature of the Indian Constitution and emphasizes that it is the people who are the ultimate source of authority.

3. Role of the People:
The Preamble reflects the collective will and aspirations of the people of India. It is a solemn resolution made by the people themselves to secure justice, liberty, equality, and fraternity for all citizens. The Constitution is not imposed by any external authority but is a product of the people's desire for a just and inclusive society.

4. Importance of the People's Resolution:
By making the resolution in the name of the people, the Preamble emphasizes the democratic principles and values that underpin the Indian Constitution. It establishes the idea of popular sovereignty, where the power to govern is derived from the consent of the people. The Constitution acts as a social contract between the people and the government, ensuring that the government works in the best interests of its citizens.

5. Inclusive Representation:
The term "People of India" in the Preamble signifies the diverse and pluralistic nature of the country. It includes people from all walks of life, irrespective of their caste, creed, religion, gender, or socio-economic background. The Constitution is designed to protect the rights and interests of all citizens, ensuring that no individual or group is marginalized or discriminated against.

6. Conclusion:
The choice of the answer, "People of India," as the entity in whose name the solemn resolution is made in the Preamble is crucial to understanding the democratic ethos of the Indian Constitution. It reflects the principles of popular sovereignty, inclusivity, and the collective will of the citizens to build a just and harmonious society.