To highlight the three main factors that kept the kingdom of Lydia surviving during great tragedy of hunger and famine.
Explanation:
McGonigal chooses to use the words scarcity, famine, and abstain to highlight the three main factors that kept the kingdom of Lydia surviving during great tragedy of hunger and famine.
These three words are the main keywords that the whole concept of the phrase revolves around. They are interrelated to one another as due to the famine, there was scarcity of food in the kingdom and the people had to subsequently abstain from eating food every alternate days.
