Step 1: Understanding the Question:
The question matches historical scientific breakthroughs with the researchers who led those discoveries.
Step 2: Detailed Explanation:
• Discovery of human blood group (A-III): Karl Landsteiner discovered the ABO blood group system in 1900, for which he received the Nobel Prize.
• Double helical model of DNA (B-II): Proposed by James Watson and Francis Crick in 1953, with critical X-ray diffraction data from Maurice Wilkins and Rosalind Franklin.
• Genetic improvement of Mexican wheat (C-IV): Norman Borlaug, known as the "Father of the Green Revolution," developed semi-dwarf, high-yielding, rust-resistant wheat varieties in Mexico.
• Mobile genetic elements in maize (D-I): Barbara McClintock discovered "jumping genes" (transposons) in maize, a discovery that challenged the idea of a stable genome.
Final Answer:
Matching: A-III, B-II, C-IV, D-I. This is found in option (C).