Fill in the Blanks: Memory Enhancement

Carefully read the following paragraph:

Who could resist the idea of remembering everything they wanted to, without trying? Learning would be made easy, exams a ______ and you would never forget where you left your keys. And memory-related disorders like Alzheimer's would have met their match. So, it is of little surprise that scientists have turned their attention to ways of ______ human memory using techniques that ______, supplement or even mimic parts of the brain. The immediate goal is to treat memory disorders, but the idea of a memory ______ for everyday life is gaining ground.

Fill in the blanks in the above paragraph, with the best option from among the following: