Final answer:
We rely on 'external brains' like digital devices primarily for connecting to people, while also acknowledging the importance of using our brains. Hence, the correct option is (A).
Step-by-step explanation:
Most of us rely on "external brains," such as smartphones and computers, primarily for connecting to people. These devices store contact information, remember important dates, and help us manage our social connections, which would otherwise clutter our minds.
This reliance has sparked a conversation about the importance of using our brains more and devices less, especially for tasks like basic calculations that can be done mentally, to enhance our mental capacity. A broader understanding of the brain shows that we use much more than the often-cited 10%.
Our cognitive abilities are complex, involving prediction, reasoning, and abstract thinking. We can better harness the full potential of our brains, not by seeking some mythical secret, but by practicing and strengthening our cognitive skills through active learning and engagement with the world around us.