It is important to have patience and endurance in building a strong character. This theme is often found in Rudyard Kipling’s writings. Which detail from "If" best supports this theme?
a. But make allowance for their doubting too;
b. If you can wait and not be tired by waiting,
c. Twisted by knaves to make a trap for fools,
d. Yours is the Earth and everything that’s in it,