The correct answer is D.

A key driver of the expansion of the private credit sector since the early 2000s has been the reduced presence of traditional banks in specific lending markets, particularly middle-market and specialized financing. This trend has been driven by:

• Increased regulation on banks: Stricter capital and liquidity requirements (e.g., Basel III) have made it less attractive or viable for traditional banks to lend to riskier or less standardized borrowers.
• Focus on core activities: Banks have shifted toward safer and more profitable sectors, such as large corporate loans and retail banking, leaving gaps in areas like middle-market lending.
• Opportunities for alternative lenders: Private credit funds have filled this gap, providing tailored and flexible financing solutions to businesses that cannot access traditional bank loans.