The word which best defines the itacilcized word Prudent is A. Cautious because it is the closest in meaning to the used word Prudent.
Cautious means being careful to avoid potential threat/problems or dangers.
Cautious best defines the word prudent because it means being able to avoid potential dangers ahead, just like the words from Frankenstein said, "I will be cool, persevering, and prudent/cautious.
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