Explanation:

The Bharat Ratna, India's highest civilian award, was not conferred upon any individual in the year 2021 (Option A). The last time the award was given was in 2019. The government decides on the recipients, and it is not necessarily awarded every year. Therefore, the number of Bharat Ratna awards given in 2021 was zero, making 'Zero' the correct option. Options B, C, and D are incorrect as no awards were conferred.