Explanation:

The correct answer is option 'D': any ten members of the Electoral College.

The process of electing the President of India is governed by the Constitution of India. According to Article 54 of the Constitution, the President is elected by an Electoral College, which consists of the elected members of both houses of Parliament (Lok Sabha and Rajya Sabha) and the elected members of the Legislative Assemblies of the states.

The proposal of a candidate for the office of the President of India can be made by any ten members of the Electoral College. Let's understand the rationale behind this choice:

1. Role of the Electoral College:
The Electoral College is responsible for electing the President of India. It comprises Members of Parliament and Members of Legislative Assemblies of the states. These members represent the diverse population of India, and their role is crucial in the selection process.

2. Criteria for Proposing a Candidate:
To ensure a fair and democratic selection process, the Constitution allows any ten members of the Electoral College to propose a candidate for the office of the President. This criterion reflects the need for a minimum level of support from the members of the Electoral College.

3. Balancing Representation:
By requiring a minimum of ten members to propose a candidate, the Constitution ensures that there is a reasonable level of support for the candidate. This requirement helps to balance the representation of diverse views and interests within the Electoral College.

4. Preventing Frivolous Proposals:
Setting a threshold of ten members for proposing a candidate also serves as a safeguard against frivolous proposals. It prevents the nomination of candidates without substantial support, ensuring that only serious and deserving candidates are considered for the office of the President.

Conclusion:

In conclusion, the proposal of a candidate for the office of the President of India can be made by any ten members of the Electoral College. This provision ensures that there is a minimum level of support and representation within the Electoral College, preventing frivolous nominations and ensuring a fair selection process.