Please let me know if these answerws are right?

QUESTION 1 7.1429 points Saudi 01. According to economic terminology, a scarce good a) cannot be supplied in sufficient quantity to satisfy all that people may want. O b) is a good for which quantity demanded is less than quantity supplied. Oc) is a 'rare' or one of a kind good such as diaranids ar works of art Och both la) and (b) are correct Oe) none of the above. 7.1429 points * Save QUESTION 2 02. The economic way of thinking O a) can be abjectively proved to be the right approach to all of life's problems. O b} is about comparing the consequences of alternative actions or decisions and choosing the one that optimizes an objective or preference function. O which is based on maximizing saciety's wellbeing, is universely recognized as the best and only way to solve problems of scarcity. All of the above O ) None of the above QUESTION 3 7.1429 points Sawd 02. The concept af efficiency a) is the same as productivity, or the number of units of output per unit of input. O bj is always understood in a purely materialistic context. O is proposed as one of the value standards by which policies, actions decisions can be judged good or bad, just as people use the idea of aimess or justice as standard to make such judgments. Od All of the above e) None of the above QUESTION 4 7.1429 points 04. The Exchange Theory of Value O a) proposes that the value of a good is based on what people are willing to give up in order to get il O bi does not answer the question whether some goods are more valuable because of what they are, rather than simply what people are willing to give up for them, O was developed around 1890. d All of the above