In this question, we are given a list of scientists (List -1) and their contributions in different fields (List - II). We need to match the scientists with their respective fields and select the correct answer using the given options.

Let`s analyze each option:

Option 1: A-3, B-4, C-2, D-1

According to this option, Alfred Wallace is associated with the Theory of evolution, Linus Pauling with Vit. C therapy, Alexander Fleming with the Discovery of Penicillin, and Dr. Ian Wilmut with Cell structure.

Option 2: A-4, B-3, C-1, D-2

According to this option, Alfred Wallace is associated with Vit. C therapy, Linus Pauling with the Theory of evolution, Alexander Fleming with Cell structure, and Dr. Ian Wilmut with the Discovery of Penicillin.

Option 3: A-3, B-4, C-1, D-2

According to this option, Alfred Wallace is associated with the Theory of evolution, Linus Pauling with Vit. C therapy, Alexander Fleming with Cell structure, and Dr. Ian Wilmut with the Discovery of Penicillin.

Option 4: A-4,