the third one, if you add the comma without the when then you would have a comma splice (when you put a comma between 2 independent clauses without a conjunction) adding the when before Cynthia makes the first part a dependent variable and makes it okay to add the comma!
Hope this helps! :)
Answer:
Simile: comparing a float aways down a stream to time
Metamorphosis: when it said the life, youth, wealth was renowned and the processes to what it was. that was the big change.
Since the sentences are not provided in this question a probable answer will serve to address. "Initiation" is defined as the start or the beginning of something, a commencement of a certain action/behavior. Moreover, initiation here could mean of something that will assess the ability or capacity of the individual before becoming a member of a peer group or certain community.