Problem: Kyle didn't care like Ryan did so

My choice: Ryan did care about changing their bad reputation in school.

Problem: Robert sought medical assistance from Randy since

My choice: Randy could fix a broken joint in his arm.

Problem: Samuel ate a great deal of rice but Matthew did not because

My choice: Matthew was trying to decrease their carb consumption.

Problem: Lawrence invested in their future by learning GIMP, but Aaron did not, so

My choice:
Aaron had less professional looking business cards.