First experiments in hydroponics were performed by

Answer: Option D

First experiments in hydroponics were performed by Sachs.
It was Sachs who first showed that plants do not need soil but the minerals derived from it. This has been the starting point of the use of hydroponics for growing plants.
Hydroponics is the technique of growing plants using a water-based nutrient solution rather than soil and can include an aggregate substrate, or growing media, such as vermiculite, coconut coir, or perlite.