Do you prefer working in a team or alone?

I prefer working alone, without all those distracting "colleagues". Why can't I work from my cabin in the woods? Why are they forcing me to work in a team of peons who question my wisdom???

Plenty of people prefer to work alone. However, working in a team is simply more efficient, even if your tasks are not closely related. This is called the synergy effect - a team doing better than the same number of people separately.
Two reasons for this should be obvious even to someone who knows jack about psychology such as myself:

• Truth is born in arguments - it is impossible to be right every time and teammates will usually see things you have missed, even if you supposedly know more than they do;
• Knowledge use and sharing - people know different things, sharing knowledge and helping others when your knowledge is required for their tasks makes everyone do better.

So if someone asks you this, the correct answer would probably be: I prefer to work in teams because teams deliver better results.