Which of these is the best definition of "literacy rate"?

a) the ability to speak one or more languages fluently

b) the ability to read and write at an appropriate and functional level

c) the measure of a country's reading level compared to that of other countries

d) the percentage of people who are able to read and write as compared to those who cannot

D) the percentage of people who are able to read and write as compared to those who cannot

Explanation:

A literate is someone who has the ability to read and write or someone who is knowledgeable in a specific field of study. Generally, a literate is regarded as an educated person. Examples a doctor is a literate likewise other professional like engineers, teachers , pilots etc are all regarded as a literate.

Literacy rate measures the percentage of people who can read and write as compared to those who cannot. Literacy rate is usually expressed in percentage which depicts the percentage of people in a group or country that have the ability to read and write. One might decides to take the literacy rate of a particular age group(15 - 30) in a nation . The literacy rate is the total number of people who are literate in that age group expressed as a percentage  of the overall population in that age group.  

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