Defection is an unprincipled practice which can do . . . . . . . . damage to the democratic process.

The correct answer is: A. incalculable.

Defection is an unprincipled practice which can do incalculable damage to the democratic process. This is because defection undermines the principle of majority rule, which is essential for a functioning democracy. When elected representatives defect from their party, they are essentially saying that they do not care about the will of the majority of their constituents. This can lead to a breakdown in trust between citizens and their elected officials, and it can make it difficult for the government to function effectively.

The other options are incorrect for the following reasons:

• B. inalienable: This means that something cannot be taken away from someone. It is not clear how defection could be considered inalienable.
• C. intolerable: This means that something is too bad to be tolerated. While defection may be considered bad, it is not clear that it is so bad that it should not be tolerated.
• D. infallible: This means that something is incapable of making mistakes. It is not clear how defection could be considered infallible.
• E. indispensable: This means that something is essential. It is not clear how defection could be considered indispensable.