The ________ assesses the readability of a document by ranking it on a 100-point scale.

A) Plain Language manifesto
B) Carnegie Readability ratio
C) Flesch Reading Ease formula
D) Simplified Technical English equation

The Flesch Reading Ease formula assesses the readability of a document by ranking it on a 100-point scale. The score takes into account factors such as sentence length and number of syllables per word, with higher scores indicating greater readability. The Plain Language manifesto is a set of guidelines for writing clearly and concisely, but it does not provide a specific assessment tool. The Carnegie Readability ratio and Simplified Technical English equation are not commonly used measures of readability for general documents.