Language of debate in Parliament: In what language(s) may Members of Parliament speak in the House? Refer to Article 120 and the practices of the Lok Sabha/Rajya Sabha. Choose the correct allowance.

Given data

• Asks permissible languages for MPs inside the House.

Concept/Approach
Under Article 120, business is transacted in Hindi or English; a member who cannot express in either may, with the presiding officer's permission, address the House in their mother tongue. Interpretation facilities are provided.

Reasoning
• Hence, English/Hindi are default; mother tongue is allowed with permission.

Final Answer
English, Hindi or mother tongue (with the Chair's permission for the latter)