Part A: Inference about the jobs of the future
The inference that can be made about the jobs of the future from President Obama's speech is:
Jobs of the future will require a college degree.
Part B: Supporting detail from the speech
The detail from the speech that best supports this inference is:
“But the fact of the matter is, is that more than 60 percent of the jobs in the next decade will require more than a high school diploma -- more than 60 percent.”