Which of the following is the most effective thesis statement?

a. the department of education’s ad campaign promoting literacy is effective in a number of ways.

b. it uses a number of strong persuasive techniques to convince a wide audience of individuals that strong reading skills are of importance.

c. the literacy campaign by the department of education is effective because it appeals to a large general audience.

d. the department of education’s literacy advertising campaign uses several persuasive techniques to persuade a broad audience that strong reading skills are beneficial.