When charts are filed alphabetically, the file system must be reorganized periodically. Why is this necessary?

The most reliable evidence for claims about the various benefits of massage would come from:

A) Scientific research B) Testimonials C) Logical deduction D) Magazine articles

Reduce 24/36 to its lowest terms:

A) 12/18 B) 6/18 C) 6/9 D) 2/3