Detailed Solution:
The correct answer is “World Tuberculosis Day, 2021”.
World Tuberculosis Day, observed on 24 March each year, is designed to build public awareness about the global epidemic of tuberculosis and efforts to eliminate the disease.
The theme of World TB Day 2021 - 'The Clock is Ticking' -conveys the sense that the world is running out of time to act on the commitments to end TB made by global leaders.