I guess I would have to say Ian Somerhalder he has been in so many amazing things. He is also a very amazing actor.
The correct answer is "He is the most famous poet of the modern era." An era is used when referring to a long period of time. A poet that is well known for an era means that they are known know, and will be known for a while. I hope this helps!
conduct- the manner in which a person behaves, especially on a particular occasion or in a particular context.
the action or manner of managing an activity or organization.