You should start with listing the different ways you want to test them. Then each paragraph should talk about each different method and the results. Hope this helps.
Become
Base Form:Become
Past Simple:Became
Past Participle:Become
3rd Person Singular:Becomes
Present Participle/Gerund:Becoming
Hey there!
Your answer is "In this brief fraction of a moment they take the first step toward performing a metamorphosis that changes people from a group into a mob."
Foreshadowing is a literary element that writers use to give a sign about a future event that may occur. Therefore, this is the correct answer, because it tells about a future event or gives a sign about.
Have a super awesome day! :)