I had trouble with this one, I was on a quiz I had.
Norman Borlaug developed a drought and disease resistant dwarf wheat which helped the people of Mexico and India during food shortages.
The correct answer would be D my friend had this same question on FLVS and this was correct :)
I'm not even going to bother reading what the question is because I really don't care enough to look 3 inches to my left and read the question, so Im writing this to explain to you that your life sucks
2. Speciation can be caused by a decreased gene flow in an ecosystem