I need more info before this can be answers like what dose sentence 7 say
To help you a little bit, even though you haven't put in the choices, the writer would need to take into account the age category of which the target audience is also they would often take into account religions aswell as genders :)
Well, I can tell you that the sentence is gramatically incorrect.
Fear can cause us to think with a negative mindset. Which can cause our future actions to be affected.