Why are sentence fragments considered to be incomplete sentences?

April does not let things interrupt her goals, she just continues on until she gets what she wants. complete, run on or comma splice

What is the narrators main conflict in this passage

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