Answer: Quantity of wisdom possessed
Step-by-step explanation:
You included no options so the answer will be a bit general.
The Latin suffix -ity is used to describe the degree of the presence of the condition in the word that it is added to. For instance, the word profitable means the condition of making a gain from something. When the suffix -ity is added to it to make it profitability, the meaning changes to the amount of profit or gain that can be made from something.
In this case therefore, if sagacious means wise, sagacity would refer to the amount of wisdom possessed by the subject in question.