Answer:
D
Step-by-step explanation:
Can't be A - 6% more voters vote democrat in the 30-44 age range
Can't be B - No evidence pointing towards this
Can't be C - As the age range decreases, more and more voters from those ranges vote democratic and no evidence points towards an even split of votes between both parties
D - From 18-44, the vote majority is democratic and votes for the republican party begin to increase as the ages increase