Fill in the blank with the correct word from the options given below:-

Sara was so ______________ that she did not take much time to make up her mind.

The correct option is impetuous.

Step-by-Step Explanation:

1. Analyze the sentence context: The sentence states, "Sara was so ______________ that she did not take much time to make up her mind." This tells us we need an adjective that describes someone who makes decisions or takes actions very quickly, without much thought or hesitation.

2. Examine the definitions of the given options:

• impervious: Unable to be affected by something (e.g., "impervious to pain" or "impervious to rain"). This does not fit the context of quick decision-making.
• impetuous: Acting or done quickly and without thought or care; impulsive. This perfectly matches the clue "did not take much time to make up her mind."
• inarticulate: Unable to speak distinctly or express oneself clearly. This is unrelated to decision-making.
• inerrant: Incapable of erring; infallible or free from error. This does not describe the speed of making up one's mind.

3. Conclusion: Since "impetuous" means acting impulsively or quickly without long consideration, it is the only word that logically completes the sentence to explain why Sara made up her mind so quickly.