The process of impeachment of the President of India can be initiated in:

either house of the parliament

The correct answer is Option 2 - either house of the parliament

The process of impeachment of the President of India can be initiated in either house of Parliament. However, it requires a specific procedure:

A notice of motion for impeachment must be given in the form of a resolution signed by at least one-fourth of the total number of members of the House (either Lok Sabha or Rajya Sabha).

The resolution must be presented to the Speaker or Chairman of the House.
If the notice is admitted, the Speaker or Chairman must constitute a committee to investigate the charges.
The committee must submit its report to the House. If the committee finds the President guilty of any charges, the resolution for impeachment can be taken up for discussion.
The resolution for impeachment must be passed by a two-thirds majority of the total membership of the House.
If the resolution is passed, it is then sent to the other house for consideration.
If the other house also passes the resolution by a two-thirds majority, the President stands impeached from the date of such resolution.

So, the process can be initiated in either the Lok Sabha or the Rajya Sabha.