According to the Text, Which of the Following Would Be

According to the text, which of the following would be a well-developed goal?

A) Although I have the ability to do better, I will be satisfied with a C in Political Science this semester.
B) Based on my background and skills, I will obtain a B in Exploring Geology.
C) Even though my experiences tell me that a C is the likely grade I'll earn in English Literature, I will work for the A my mother wants me to get.
D) In spite of the C I earned in Trigonometry last semester, I will earn an A in Calculus I this semester.