A proverb is a popularly known simple saying that expresses a truth based on common sense or experience. They are often metaphorical. A proverb that describes a basic rule of conduct may also be known as a maxim.
The answer is (d) Reap.
Meaning: As You Sow So Shall You Reap means that Man is responsible for the consequences of his actions. If the action is based on goodness, it will churn out goodness in the long run and vice versa.
Origin: The Bible