Ans q 10 with explanation fast

$$\begin{gathered} 10. ................Rediscovered medels work and got it published in ...........in . \\ \left(1\right) carl correns,observa,1865 \\ \left(2\right) de vries,Flora,1901 \\ \left(3\right) Von Tschemak ,Fauna, 1900 \\ \left(4\right) All except\left(1\right) \end{gathered}$$

Dear student,
All the three scientists mentioned in the options worked individually and rediscovered Mendel's law in the 20th century i.e. in 1900s . Bt in option (1) the year mentioned is 1865. Moreover Carl  correns was born in 1864, so option (1) is incorrect.
whereas Hugo de Vries and Erik Tschermark rediscovered Mendel's law in the mentioned year and place.
So, the correct option for this answer is(4) All except (1)