Hybrid vigour is exploited maximum in

Answer: Option D

Hybrid vigour is exploited maximum in Maize.
Hybrid vigor is the increase in stature, biomass, and fertility that characterizes the progeny of crosses between diverse parents such that the F1 is superior to the better of the two parents.
Heterosis describes the superior phenotypes observed in hybrids relative to their inbred parents. Maize is a model system for studying heterosis due to the high levels of yield heterosis and commercial use of hybrids.