In the context of finance, the term 'beta' refers to

Answer: D. In finance, 'beta' refers to a numeric value measuring fluctuations of a stock relative to the overall stock market. In the Capital Asset Pricing Model (CAPM): - Beta = covariance(stock return, market return) / variance(market return) A stock with beta = 1 moves in line with the market. A stock with beta > 1 is MORE VOLATILE than the market (aggressive). E.g., beta 1.5 means stock typically moves 1.5% for each 1% market move. A stock with beta < 1 is LESS VOLATILE than the market (defensive). E.g., beta 0.5 means stock moves 0.5% for each 1% market move. A stock with negative beta moves opposite to the market. Beta is a measure of SYSTEMATIC RISK (market-related risk that cannot be diversified away). Investors use beta to construct portfolios with desired risk profiles. Distractors fail: (A) Describes ARBITRAGE. (B) Describes ASSET ALLOCATION strategy. (C) Describes BASIS RISK or hedging imperfection. Source: NCERT Class 12 Business Studies / CFA fundamentals of investment / Hull's Options, Futures and Other Derivatives.