Solution

Mendel’s work was independently rediscovered by three botanists - Hugo de Vries, Carl Correns and Erich von Tschermak in 1900. They were working on different plant hybrids and review of the literature before publishing their own results led them to Mendel's old papers. They named the laws as Mendel’s laws of inheritance and got it published in “Flora” in 1901. Thus, the correct option is D.