Answer: Both covered interest rate parity and uncovered interest rate parity

The forward rate is an unbiased predictor of the future spot rate when both covered interest rate parity (CIRP) and uncovered interest rate parity (UIRP) hold simultaneously. - **Covered interest rate parity** ensures that the forward rate reflects interest rate differentials between countries - **Uncovered interest rate parity** implies that expected exchange rate changes equal interest rate differentials When both conditions hold, the forward rate equals the expected future spot rate, making it an unbiased predictor.

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