Explanation: The given sentence talks about 'bravery' of Lakshmi Bai being praiseworthy. When a particular noun is being used with an adjective, article 'the' is supposed to be used before the adjective to indicate specificity. So, here the adjective is 'bravery' and the noun is 'Lakshmi Bai'. So, the article to fill in the blank is 'the'.