A linebacker is a position in American and Canadian football.
I like American football. How would you describe the linebackers function?
That is an excellent question. Linebackers play on the defensive team, and line up around 3 to 5 years behind the line of scrimmage and behind the defensive linemen.
I think you meant 3-5 yards! Linebackers are also very versatile and play an important role in pass protection when needed. Do you have a favorite linebacker?
Oops, you are correct haha. I do not have a favorite player, I just really like the position because their objective is to provide extra run protection or extra pass protection based on the defensive play being executed. I feel that defense is key to winning a game!
Yes, defense is very important! I just recently found out that very few linebackers ( and other defensive players) ever make it to MVP.  My favorite linebacker did!  LT or Lawrence Taylor from the Giants.
LT is a really good player, I admire him. Linebackers are considered the most important position in defense because their versatility in providing hard hits on running plays or pass protection is so potent. 
True, and they are also responsible for blitzes which is a fun and interesting part of football.
Yes, that is one of the key plays as a linebacker!