can someone please help me edit this and tell me where to put commas, periods, or semicolons will mark u as BRAINLIEST!!

It's to know your purpose before you read something because a purpose can:

Read this description of a detail from the movie i am legend. a scientist is the last man alive in a post-apocalyptic new york, where zombies have taken over and destroyed most of the population. about ten minutes into the film, the man thinks back to how the zombie creatures came to be, and how at one point he had a wife and child. which type of suspense technique did the screenwriter use? dramatic irony flashback foreshadowing special effects

What is the best prediction of the meaning of thrilling based on the context clues?