A taxpayer owns a diversified portfolio. They want to optimize 'asset location' for tax efficiency. Which asset is BEST suited for a Roth IRA?

1. Understand Roth Benefit: Tax-free growth and withdrawal.<br/>2. Strategy: Place assets with highest expected return or highest tax inefficiency in Roth.<br/>3. Evaluate Options:<br/> - Muni Bonds: Tax-free anyway. Bad for Roth.<br/> - Index Fund: Tax efficient (LTCG). Good for Taxable.<br/> - Cash: Low return. Bad for Roth.<br/> - High Growth/REITs: High return or high ordinary income. Best for Roth.