Final answer:
The correct option to complete the sentence is 'contable'.
Step-by-step explanation:
The correct option to complete the sentence is contable.
The sentence states that Laura is a very busy boss and the contable helps her with the numbers. The word contable means 'accountant' in English, and it is the most appropriate word choice in this context.
Therefore, the sentence would read: 'Laura is a very busy boss. The accountant helps her with the numbers.'
Learn more about Choosing the best word to complete a sentence in Spanish