Concept:Consumer equilibrium is reached where the indifference curve is tangent to the budget line.Explanation:At the equilibrium point, the slope of the indifference curve equals the slope of the budget line.This means the consumer’s marginal rate of substitution equals the price ratio of the two goods.From the graph, the point where the indifference curve just touches the budget line is point k.At this point, the consumer obtains maximum satisfaction within the given budget constraint.Answer:A. k
