Study the words in the box and choose the right word for each blank. ______ is the scientific study of the human mind and the reasons for people’s behavior. There is no ______ to how much fresh fruit you can eat in a day. However, the scheme is ______ to meet opposition from fishermen’s leaders. A(n) ______ is a particular method of doing an activity, usually a method that involves practical skills. Education is not an optional ______; it is a must. The choice of computer is determined by our ______ needs. A(n) ______ is a public display with words or a picture that gives people information, warnings or instructions. Of the two possibilities, this is the more ______. We’re giving away 2,000 free ______.