1. Which of the following was mentioned as having the most opportunity for new research? A. How different vitamins and proteins affect the dam
B. How different vitamins and proteins affect the sire
C. How different vitamins and proteins affect the offspring
D. How different vitamins and proteins cause genetic defects
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Option D, How different vitamins and proteins cause genetic defects

Explanation:

Maximum opportunity for research is in option D because it covers all the three research scopes mentioned in option A, B and C

Vitamins and proteins will affect the dam, sire and offspring and all these three cases can be studied by studying the role of vitamins and proteins in genetic defects in nutshell.

Hence, instead of researching on three option i.e A, B and C individually , One can research on option D only.