Respuesta :
Answer: A. it helps the reader understand the relationship between self doubt and failure.
Explanation: a metaphor is a figure of speech that explains a concept, an idea or describes something in a way that isn't literal but it makes a comparison that helps to understand the idea. In the given example the metaphor is made by saying that the word "can't" is a father or a parent of feeble endeavor, terror and halfhearted work, the effect of this metaphor is to understand that saying "I can't" (self doubt) is the first step to failure.