The Net Stable Funding Ratio (NSFR) is the correct answer because it includes regulatory capital in the numerator. The NSFR is defined as:

$\text{NSFR} = \frac{\text{Available Stable Funding (ASF)}}{\text{Required Stable Funding (RSF)}}$

Where Available Stable Funding (ASF) includes:

• Regulatory capital (Tier 1 and Tier 2 capital)
• Stable deposits
• Other stable funding sources

In contrast:

• Return on Equity (ROE) is a profitability ratio, not a Basel liquidity ratio
• Net Interest Income (NII) is an income statement item, not a ratio
• Liquidity Coverage Ratio (LCR) focuses on high-quality liquid assets and does not include regulatory capital in its calculation

The NSFR was introduced under Basel III to ensure banks maintain stable funding profiles over a one-year horizon, and regulatory capital is explicitly included in the ASF component as it represents the most stable form of funding.