What does trigger mean a clear simple basic explanation please

What is articulating thoughts and ideas effectively using oral written and non-verbal skills a part of

What do the excerpts have in common? both point out the tragic nature of situations in which children make journeys without their parents. both describe what immigrant children must do to survive when traveling to the united states. both explain why most children want to leave central america without their parents. both indicate the tragic problems and their consequences that children in central america must face.

Which of the following excerpt from part one of trifles suggest that mrs.hale believes mrs.wright may have had a motive for killing her husband?