Correct option is D
Evapotranspiration can be estimated using:
Lysimeter studies (direct measurement)
Water balance method (indirect)
Empirical formulas like Penman-Monteith
Hence, all methods are valid.
Evapotranspiration can be estimated using:
Lysimeter studies (direct measurement)
Water balance method (indirect)
Empirical formulas like Penman-Monteith
Hence, all methods are valid.