What is a good question to ask yourself when deciding a thesis statement?

(a) those my thesis cover the entire main idea?
(b) does my thesis show the reader i've thought through my topic?
(c) both a and b
(d) neither a and b

Why would the following likely fail as the basis for an evaluative argument? "the theme of gender bias among adults is an important one"a: it is based on a moral judgment that not everyone sharesb. it is based on the writers personal tastec. it is based on faulty assumptiond. none of the above