Read and write. Think of the term "literacy rate" it refers to how much of a population can read and write.
The faster it reaches the bloodstream
It's D because a checklist is to help you organize a list of things like groceries, homework etc. It can sperate indormation..for example, homework need to be separated so we won't messed up on which is which. It can also portray information clearly because you're making a check list.
Library books and items bought in stores are 2 different applications that make use of barcodes.
