Step 1: Find the test.
Ask two things about each act: is it aimed at a person, and does it humiliate or harass that person in public? Cyberbullying needs both.
Step 2: Apply it to option 2.
A fake profile in a friend's name with embarrassing pictures targets that friend and shames them in front of others. Both parts of the test are met.
Step 3: Apply it to the other options.
Phishing links aim to steal information, so the goal is theft, not shame. Blocking someone is a private step with no harm done to them. Hacking mails aims at secret access, and it is not public humiliation.
Step 4: Name the real categories.
Option 1 is phishing, option 3 is simple blocking, and option 4 is hacking or unauthorised access. Only option 2 is bullying.
Step 5: Pick the answer.
The example of cyberbullying is option 2.
Step 6: Extra check.
Another way to remember: cyberbullying hurts feelings and reputation, while phishing and hacking hurt data and security. The picture-sharing act in option 2 clearly hurts reputation and feelings, so it is bullying.
Final Answer:
The cyberbullying example is creating fake profiles and posting embarrassing pictures, option 2.
\[ \boxed{\text{Option 2}} \]