The answer would be a, water.
Answer:
In addition to his moral weakness, Macbeth is easily persuaded because he lacks judgement and has a poor will. Although he has given himself good reasons not to kill Duncan, his mind switches quickly as soon as Lady Macbeth starts provoking him.
How do those lines apply to your life? This isn't a question that has one correct answer, but it could be figured that you eat bread right? If you're trying to be philosophical about it, you could talk about how the thunder accompanies the rain and plants are fed by rain, you are fed by plants therefore you shouldn't fear the thunder. This question is entirely up for interpretation.