"urge" refers to a strong desire or impulse, particularly the compelling drive or motivation to succeed in life. The word "desire" closely aligns with the meaning of "urge" in this context. Both convey a strong wish or longing for something and in this case, it's the desire for success. So, in the given sentence, the word "urge" is used to express the strong inner drive or desire that everyone has to succeed in life. Therefore, option B. "desire" is the most suitable choice.