The rules of english are called conventions because they are determined by a. wide acceptance among english users b. groups of grammar judges who meet regularly c. the unchanging traditions of earlier generations d. agreements among the editors of usage dictionaries

The correct answer is A.

Explanation:

     The word convention means the accepted way of doing things. This can be applied to the Engish language and its rules. The rules of English or conventions are a set of widely accepted standards or practice. For instance, in writing a narrative, we can find the convention  of including characters, setting and a plot and in writing a letter there is a layout to follow. In both cases, people will know that they are reading a narrative or a letter because of the conventions included.          

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.