How might you indicate that a movie did not hold your attention?

Indicating that a movie did not hold your attention can effectively be expressed through the description of it as "dull and uninspiring." This phrase conveys a clear sense of boredom and lack of engagement with the film. When something is described as dull, it suggests that it failed to stimulate interest or excitement. Additionally, calling it uninspiring implies that the movie did not evoke any strong emotions or thoughts, reinforcing the idea that it was not captivating enough to keep the viewer’s focus.

The other options describe positive experiences with a movie, emphasizing excitement and gripping narratives, which contradict the intent to express disinterest. Thus, using the term "dull and uninspiring" is the most fitting way to convey a lack of attention and engagement with the film.