Choose the correct option to fill in the blanks with “who,” “whom,” or “whose.”

1 - The man  ____ car was parked outside the office came in to ask about the meeting.

2 - The teacher ___ you spoke to is on vacation.

3 - I have a colleague____ knows a lot about modern art.

4 - The musician_____ song won the award is very talented.

5 - The participants_____ answers were correct received certificates.