The correct answer is A. Correct spelling, punctuation, and grammar.
Explanation:
Effective writing refers to writing in which the author can communicate the main point or idea effectively, this implies the main idea is explained and supported logically and also the authors follows conventions of writing that include specific formats depending on the type of text (essay, article, story, etc), as well as correct spelling, punctuation, and grammar as these, are also necessary for the text to be clear. On the other hand, texts should not be ambiguous as this confuses the reader and the length of texts varies in each case. Thus, the only statement related to effective writing is "Correct spelling, punctuation, and grammar".
