Concept:"Ambition" means a strong inner desire to achieve a specific goal.
Explanation:The sentence shows that the speaker deeply wishes to become the President of Ghana.
Such a wish is more than a casual thought because it calls for hard work and focus.
An ambition is a long-term aim that drives a person to work towards success.
The word that best matches this meaning is "aspiration".
An aspiration is a hope or strong desire to accomplish something in the future.
The remaining choices carry different meanings.
A "calling" refers to a strong urge to follow a particular profession.
A "decision" is a firm choice made after careful thinking.
A "career" is the sequence of jobs a person holds over time.
None of these words fits the meaning of "ambition" as used in the sentence.
Therefore, "aspiration" is the correct answer.
Answer:C. aspiration