Ans. Here are the categories of DDQ or due diligence questionnaires. Competitive intelligence. Company questions. Real estate and property holdings. Founder and company background. Operational information. Shares and ownership information. Regulatory compliance. Employee information. Data security and privacy. Environmental factors. Contractual obligations. Diversity and inclusion initiatives. Administrative information. Legal overview. Reputation and publicity reports. Financial and debt statements. Information technology systems. Consumer/customer information. Tax history. Industry and market insights. Intellectual property.