The correct answer is: D. 31 May.
World No Tobacco Day is observed on 31 May every year. It is an annual observance that encourages a 24-hour cessation of tobacco use. The day is intended to draw attention to the harmful and deadly effects of tobacco use and to discourage the use of tobacco in any form.
The day was first observed in 1987, following the adoption of the World Health Organization’s Framework Convention on Tobacco Control in 2003. The convention calls on all member states to implement a comprehensive tobacco control program, including measures to reduce tobacco use, protect people from secondhand smoke, and raise taxes on tobacco products.
Tobacco use is the leading cause of preventable death in the world. It is responsible for more than 7 million deaths each year, including more than 890,000 deaths from secondhand smoke exposure. Tobacco use is a major risk factor for a number of chronic diseases, including cancer, heart disease, stroke, and chronic obstructive pulmonary disease (COPD).
World No Tobacco Day is an opportunity to raise awareness about the dangers of tobacco use and to encourage people to quit smoking. It is also a time to call on governments to take action to reduce tobacco use and protect people from secondhand smoke.
The other options are incorrect because they are not the dates on which World No Tobacco Day is observed.