The weak axiom of revealed preference states that if a consumer chooses bundle X when bundle Y is available, then X must not be preferred over Y in any other situation. This axiom reflects consistent preferences over time.
Therefore, the correct answer is (b).
A consumer experiences the following total utility from consuming a certain good:
If the price per unit is ₹4, at what quantity does the consumer stop purchasing under the equilibrium condition where M U m = 5?