What does ma and tom do to calm grandpa in The Grapes of Wrath?

In "The Grapes of Wrath," Ma and Tom Joad help to calm Grandpa by reassuring him and providing comfort during his moments of distress. They engage with him, showing understanding and patience, which helps alleviate his anxiety about their uncertain future. Ma, in particular, nurtures him with food and warmth, creating a sense of stability amidst the chaos of their situation. Their supportive presence helps to ease Grandpa's fears as they prepare for their journey.