Explanation:

- Option 1: It is merely a rule of caution.

This means that the maxim serves as a guideline rather than a strict rule. It's used to advise careful assessment of credibility rather than automatically discrediting all evidence or testimony.

- Option 2: This maxim does not occupy the status of law in India.

The maxim is not legally binding in Indian law. Instead, courts in India emphasize judging evidence based on its own merit rather than dismissing it entirely if a part is false.

- Option 3: It means that if a thing is false in respect of one, it must be taken to be false in respect of all.

This describes the literal interpretation of the maxim, suggesting that falsehood in one aspect leads to the presumption of falsehood overall.

- Option 4: All the above.

This option correctly encompasses all statements, summarizing the general interpretation and application of the maxim.