The correct answer is D, Fundamental analysis. Fundamental analysis involves evaluating a company’s financial statements, earnings, revenues, management quality, competitive position, and overall economic conditions to determine the intrinsic value of a security. This approach typically focuses on long-term investment horizons, as it seeks to identify whether a stock is undervalued or overvalued based on its underlying business performance.

Fundamental analysts examine key financial metrics such as price-to-earnings (P/E) ratios, earnings growth, debt levels, and cash flow. They also consider broader factors like industry trends and macroeconomic conditions. Because it relies on detailed financial and operational data over time, it is best suited for investors looking to make long-term investment decisions.

Choice A, Technical analysis, focuses instead on price patterns, charts, and trading volume, typically over shorter time frames, without regard to a company’s financial health. Choice B, Economic analysis looks at broad macroeconomic factors like GDP, inflation, and interest rates, not individual companies. Choice C, Quantitative analysis uses mathematical and statistical models, often algorithm-driven, rather than company-specific qualitative and financial evaluation.

Thus, the description clearly aligns with fundamental analysis, making choice D the correct answer.