You have to include the rules with the question
1. Cat's (singular possessive)
2. boss's (singular possessive)
3. elephants' (plural possessive)
Sorry I don’t know how to answer this
Jamie Moore being unkind should be left out. That’s direct characterization, which isn’t necessary in a summary of a plot. It’s descriptive rather than a detail that moves the plot along.
Just redirect the conclusion to the opposite way.
Manjila did not throw a tantrum when she was told that she wouldn't be able to go.