Step 1: Rediscovery of Mendel’s work.
Mendel’s experiments were rediscovered independently by Hugo de Vries, Karl Correns, and Erich von Tschermak.
Step 2: Contribution of Karl Correns.
Karl Correns critically analysed Mendel’s data and formulated the three classical laws of inheritance.
Step 3: Conclusion.
Thus, the correct answer is Karl Correns.