Answer: Analysis of backtesting output

## Explanation The identification of downside risk and structural breaks most likely occurs during the **Analysis of backtesting output** phase. - **Option B** is correct because: - **Downside risk** analysis involves examining the negative performance periods, maximum drawdowns, and risk metrics that are calculated after the backtest has been run. - **Structural breaks** refer to changes in market regimes or relationships that can be detected by analyzing the backtesting results over different time periods. - **Option A** (Strategy design) is the initial phase where the investment strategy is formulated, but downside risk and structural breaks are typically identified and analyzed after the backtest results are generated. During the analysis phase, managers examine the performance data to identify periods of poor performance, assess risk-adjusted returns, and detect any regime changes that might affect the strategy's future viability.

Author: LeetQuiz Editorial Team