When individuals acquire, process, and act on relevant economic information promptly in their own self-interest and investigate its impact on others, they are said to have expectations.

rational

Explanation:

Rational expectations is a way by which individuals make their decisions based on their past experience, self interest, human rationality and the information that they have.

Therefore, when individuals acquire, process, and act on relevant economic information promptly in their own self-interest and investigate its impact on others, they are said to have rational expectations.

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.