Does everyone in your office always agree all the time？ When someone makes a suggestion， does everyone just smile and nod in agreement？ When you bring forward an idea， do people just accept t？ Well， if you answered yes" to any of these questions， you are in an extremely unusual workplace. People are people. And people butt heads.They disagree， they argue， and they fight. You can’t get around it. But you can learn to deal with it To hold your own， you need to learn how to argue effectively. If you’ve got an opinion， you need to defend it. And if you have a problem with something a colleague has done， you need to let tem know. This can make for some difficult discussions and meetings， but this is just a part of life and business skills. So how can you argue effectively？ Well， you need several. The main point of this passage is about（）.

A. the fact of disagreement and argument in the office
B. how to avoid disagreement and argument in the office
C. how to argue effectively in the office