Which of the following is punctuated correctly?
a. "whales are more intelligent than people believe," says william smith.
b. "whales are more intelligent than people believe." says william smith.
c. "whales are more intelligent than people believe" says william smith.
d. "whales are more intelligent than people believe," says william smith!

the answer is A,

Explanation:because no exclamation point not d nothing at end sentence not C  a period at the end of a quote not b

D. A helpful method for improving the quality of all types of writing.

Explanation:

The writing process can be defined as a framework that typically contains the steps, physical and mental actions and methods used by people to produce a finished piece of writing or text-based materials such as articles, novel, storybook, etc.

Basically, the writing process comprises of five (5) main stages or phases and these are;

I. Prewriting.

II. Writing.

III. Revising.

IV. Editing.

V. Publishing.

If the aforementioned stages are followed and utilized effectively, it would significantly enhance a literary work and help the writer to improve or get better at it.

Hence, the statement which best describes the writing process is that it is a helpful method for improving the quality of all types of writing.