The word that best completes the explanation is emboldened. Thus the correct option is (B).
<h3>What is the meaning of Emboldened?</h3>
Emboldened refers to the courage, boldness or the confidence in the person to do certain task.
According to the above sentence, Stephen is an excellent in the french subject and effectively speaks the french language. Thus excellence performance in the french boost his confidence in speaking the language.
Thus the appropriate word is emboldened. Therefore the correct option is (B).
Learn more about Emboldened here:
brainly.com/question/14315642
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