The question is asking you to match a list of scientists (List I) with their respective discoveries (List II). You need to choose the correct answer using the given codes.

Let`s look at each option:

Option 1: 1 2 3 4 1

According to this option, the discoveries made by the scientists are:

- Goldstein discovered the proton

- Chadwick discovered the neutron

- JJ Thomson discovered the electron

- John Dalton developed the atomic theory

This option matches the scientists with their discoveries correctly, so it could be the correct answer.

Option 2: 2 2 4 3 1

According to this option, both Goldstein and Chadwick discovered the proton, which is incorrect. Each scientist should be matched with a different discovery. Therefore, this option is incorrect.

Option 3: 1 4 3 2

According to this option, Goldstein discovered the atomic theory, which is incorrect. Goldstein did not propose the atomic theory; John Dalton did. Hence, this option is incorrect.

Option 4: 1 3 4 2

This option does not follow the order of the given lists. It should match John Dalton with the atomic theory, which it does not