Final answer:
The question on how Bullock defined a proverb 'in its basic form' doesn't have an explicit answer in the provided text. Proverbs are generally understood as brief traditional sayings with practical wisdom or truths.
Step-by-step explanation:
Robert Bullock's definition of a proverb "in its basic form" isn't explicitly provided in the text given. However, the context suggests that proverbs are considered a form of wisdom handed down through generations, encapsulating truths about human nature and societal norms. A proverb's basic form likely refers to its concise and traditional expression that offers advice, shares wisdom, or observes a general truth. Proverbs come in various forms, as shown in the provided examples, but their underlying commonality lies in their brevity and ability to capture complex concepts succinctly.