单选题A There is no evidence showing that memory aids are invalid.B Human beings’ brain functions mainly through memory aids in an effective way.C Memory aids encourage an organised approach which helps the brain function effectively.D Memory aids have littl

There is no evidence showing that memory aids are invalid.

Human beings’ brain functions mainly through memory aids in an effective way.

Memory aids encourage an organised approach which helps the brain function effectively.

Memory aids have little effect on the brain.